Scope Drop-Test & Zero-Retention Database

62 evaluations indexed from 61 source threads · every row verified against its source before publish · database grows in verified batches

How This Works

Every publicly documented scope zero-retention evaluation, in one structured table — one row per eval, one column per test stage, every cell linked to its source. We add structure and statistics; the testing is theirs. Read the originals. A scope that hasn't been through a stage shows not tested — never a pass. See what's indexed and what we add.

BrandEvaluatorFocal planePrice bandOutcome at any stage

Brand	Model	Config	Tracking / RTZ	18″ drops	36″ (single)	3×36″	Long-term	Evaluator	Source
Arken	EPL-4	4-16x44 · FFP	Pass*	Pass	Shift*	Fail*	Fail*	Rokslide field eval	source
Athlon	Helos BTR Gen 2	2-12x42	Pass*	Pass	Fail*	Fail*	Fail*	Rokslide field eval	source
Burris	Fullfield (original)	3-9x40	Not tested	Pass	Pass	Fail*	Not tested	Rokslide field eval	source
Burris	Signature HD	3-15x44 · SFP	Fail*	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Bushnell	Match Pro ED	5-30x56	Not tested	Shift*	Fail*	Fail*	Shift*	Rokslide field eval	source
Crimson Trace	Hardline Pro FFP	4-16x40 · FFP	Not tested	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Crimson Trace	Hardline Pro SFP	4-16x50 · SFP	Fail*	Pass	Pass	Fail*	Not tested	Rokslide field eval	source
Element Optics	Nexus Gen 2	4-25x50	Not tested	Pass*	Fail*	Fail*	Not tested	Rokslide field eval	source
Leica	PRS	5-30x56	Pass*	Fail*	Fail*	Shift*	Not tested	Rokslide field eval	source
Leupold	Mark 4 HD	2.5-10x42 · FFP	Pass*	Pass	Fail*	Shift*	Shift*	Rokslide field eval	source
Leupold	Mark 5HD (sample #1)	3.6-18x44	Pass*	Not tested*	Shift*	Shift*	Fail*	Rokslide field eval	source
Leupold	Mark 5HD (sample #2)	5-25x56 · FFP	Not tested	Shift*	Shift*	Fail*	Fail*	Rokslide field eval	source
Leupold	Ultra M3A (Mark 4 fixed 10x)	10x40 (fixed)	Not tested	Pass	Pass*	Pass	Pass*	Rokslide field eval	source
Leupold	Vari-X II	2-7x33 · SFP	Not tested	Pass*	Fail*	Fail*	Not tested	Rokslide field eval	source
Leupold	VX-3HD CDS-ZL	3.5-10x40 · SFP	Fail*	Fail*	Fail	Fail*	Fail*	Rokslide field eval	source
Leupold	VX-3HD CDS-ZL	2.5-8x36	Pass*	Fail*	Fail*	Fail*	Fail*	Rokslide field eval	source
Leupold	VX5-HD (sample #1)	3-15x44	Not tested	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Leupold	VX5-HD (sample #2)	3-15x44	Not tested	Fail*	Fail	Fail*	Not tested	Rokslide field eval	source
Leupold	VX6-HD CDS-ZL2	3-18x44	Not tested	Shift*	Shift*	Fail*	Not tested	Rokslide field eval	source
Leupold	VX6-HD CDS-ZL2	3-18x50	Not tested	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
March	FX	4.5-28x52 · FFP	Pass*	Pass	Pass	Pass	Fail*	Rokslide field eval	source
March	FX Dual Focal Plane	1.5-15x42	Pass*	Pass	Pass	Pass	Shift*	Rokslide field eval	source
Maven	CRS.3	4-20x50	Pass*	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Maven	RS.3	5-30x50 · FFP	Fail*	Fail*	Fail*	Not tested*	Not tested	Rokslide field eval	source
Maven	RS.5	4-24x50 · SFP	Fail*	Fail*	Fail*	Fail*	Pass*	Rokslide field eval	source
Maven	RS.6	1-10x28	Fail*	Shift*	Pass	Pass	Not tested	Rokslide field eval	source
Maven	RS1 (original)	2.5-15x44	Fail*	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Maven	RS1.2	2.5-15x44 · FFP	Pass*	Pass	Pass	Pass*	Pass*	Rokslide field eval	source
Meopta	Optika6 RD FFP	3-18x50 · FFP	Pass*	Pass*	Pass*	Not tested	Fail*	Rokslide field eval	source
Minox	ZP5 THLR	5-25x56	Pass*	Pass	Pass	Pass*	Pass*	Rokslide field eval	source
Nightforce	ATACR F1	4-16x42 · FFP	Pass*	Pass	Pass	Pass	Pass*	Rokslide field eval	source
Nightforce	NX8 F1	4-32x50 · FFP	Pass*	Pass	Pass	Pass*	Not tested	Rokslide field eval	source
Nightforce	SHV	3-10x40 · SFP	Fail*	Pass	Pass*	Pass*	Pass*	Rokslide field eval	source
Primary Arms	SLx FFP	4-14x44 · FFP	Not tested	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Revic	Acura	5-25x50	Pass*	Pass	Pass	Pass	Not tested	Rokslide field eval	source
Riton	3-18x44 SFP	3-18x44 · SFP	Fail*	Fail*	Not tested	Not tested	Not tested	Rokslide field eval	source
Schmidt & Bender	Klassik	8x56 (fixed)	Not tested*	Pass*	Pass	Pass*	Not tested	Rokslide field eval	source
Sightmark	Presidio	3-18x50	Not tested	Fail*	Not tested	Not tested	Not tested	Rokslide field eval	source
Sightron	S-Tac FFP	3-16x42 · FFP	Not tested	Fail*	Not tested	Not tested	Not tested	Rokslide field eval	source
Sightron	S6 LRT	1-6x24 · FFP	Pass*	Pass*	Pass	Pass	Not tested	Rokslide field eval	source
Sightron	STAC SFP	1-6x24 · SFP	Fail*	Pass*	Pass	Pass	Not tested	Rokslide field eval	source
Swarovski	Z3	3-10x42	Not tested	Fail*	Fail*	Not tested	Not tested	Rokslide field eval	source
Swarovski	Z5i +	3.5-18x50 · SFP	Not tested	Pass	Fail*	Fail*	Not tested	Rokslide field eval	source
SWFA	SS Gen II	3-15x42	Pass*	Pass	Pass	Pass*	Not tested	Rokslide field eval	source
SWFA	SS MQ	6x42 (fixed)	Pass*	Pass	Pass	Pass	Pass*	Rokslide field eval	source
SWFA	SS Ultra Lite	2.5-10x32 · SFP	Pass*	Pass*	Shift*	Shift*	Not tested	Rokslide field eval	source
Tangent Theta	TT315M Professional Marksman	3-15x50 · FFP	Pass*	Shift*	Pass*	Shift*	Not tested	Rokslide field eval	source
Tract	Toric Ultra HD	3-15x50	Pass*	Shift*	Fail*	Fail*	Not tested	Rokslide field eval	source
Trijicon	Credo	3-9x40 · SFP	Fail*	Pass	Pass	Shift*	Pass*	Rokslide field eval	source
Trijicon	Credo HX	2.5-15x42 · SFP	Pass*	Pass	Pass	Pass*	Pass*	Rokslide field eval	source
Trijicon	Huron	3-9x40 · SFP	Not tested	Pass	Pass	Pass*	Not tested	Rokslide field eval	source
Trijicon	Tenmile	3-18x44 · FFP	Pass	Pass	Pass*	Pass*	Pass*	Rokslide field eval	source
Vector Optics	Continental	2-12x44	Pass*	Fail*	Fail*	Fail*	Not tested	Rokslide field eval	source
Vortex	Razor Gen III	6-36x56	Fail*	Fail*	Fail*	Fail*	Fail*	Rokslide field eval	source
Vortex	Razor HD LHT	4.5-22x50	Pass*	Fail*	Fail*	Not tested	Fail*	Rokslide field eval	source
Zeiss	LRP S3	6-36x56	Pass*	Pass	Pass	Pass	Pass*	Rokslide field eval	source
Zeiss	LRP S5	3-18x50	Fail*	Pass*	Fail*	Fail*	Fail*	Rokslide field eval	source
Zeiss	V4	4-16x44	Pass*	Fail*	Fail*	Not tested	Not tested	Rokslide field eval	source
Zero Compromise Optic	ZC420	4-20x50	Pass*	Fail*	Fail*	Shift*	Shift*	Rokslide field eval	source
ZeroTech	Thrive HD Micro Prism	1x20 (prism)	Not tested	Pass*	Pass*	Pass*	Not tested	Rokslide field eval	source
ZeroTech	Trace ADV	4-24x50	Not tested	Pass*	Fail*	Fail*	Not tested	Rokslide field eval	source
ZeroTech	Trace FFP	3-18x50 · FFP	Not tested	Fail*	Fail*	Fail*	Fail*	Rokslide field eval	source

Arken EPL-4

4-16x44 · FFP · Rokslide field eval · source

Tracking / RTZPass — RTZ clean; later shooting showed a vertical-consistency issue
18″ dropsPass
36″ (single)Shift — 0.3 mil down from the top 36″ drop; follow-up shot returned to group
3×36″Fail — 9×36″ series shifted it high-right
Long-termFail — repeated random 0.2–0.3 mil vertical shifts on two rifles while control scopes held

Athlon Helos BTR Gen 2

2-12x42 · Rokslide field eval · source

Tracking / RTZPass — RTZ clean; 6.8 mils spot-on (sample #2), with a lingering 0.1–0.2 mil zero inconsistency
18″ dropsPass
36″ (single)Fail — significant shifts on all 36″ drops (both samples)
3×36″Fail — severe shift — measured 1.0 mil down / 3.5 mil right correction (sample #1)
Long-termFail — lost zero repeatedly riding in a truck within two weeks; scopes alongside it held

Burris Fullfield (original)

3-9x40 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass
36″ (single)Pass
3×36″Fail — major shift high/right on the 9×36″ series — evaluator suspects the rings, not the scope
Long-termNot tested

Burris Signature HD

3-15x44 · SFP · Rokslide field eval · source

Tracking / RTZFail — 17% adjustment error at 18.5 MOA (moved 15.5)
18″ dropsFail — clear shifts on the right and top 18″ drops
36″ (single)Fail — consistent shifts with drops
3×36″Fail — shifted, but the scope settled back to zeroed after the drops
Long-termNot tested

Bushnell Match Pro ED

5-30x56 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsShift — sides held; top 18″ drop shifted 0.5 mil up / 0.3 mil right
36″ (single)Fail — all three 36″ drops shifted
3×36″Fail — 3×3 36″ drops shifted 1.6 mils high / 0.5 mil left
Long-termShift — 0.2–0.3 mil after a couple weeks and ~200 miles of transport

Crimson Trace Hardline Pro FFP

4-16x40 · FFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — shifted after every drop — total failure per source
36″ (single)Fail — shifted after every drop — total failure per source
3×36″Fail — shifted after every drop — total failure per source
Long-termNot tested

Crimson Trace Hardline Pro SFP

4-16x50 · SFP · Rokslide field eval · source

Tracking / RTZFail — 3% adjustment error (series bound is ~2%); RTZ itself was clean
18″ dropsPass
36″ (single)Pass
3×36″Fail — shifted on the 9×36″ series, then returned to functionally zeroed
Long-termNot tested

Element Optics Nexus Gen 2

4-25x50 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass — no effect
36″ (single)Fail — right-side and top 36″ drops shifted POI
3×36″Fail — 9×36″ caused a dramatic left shift; walked back to zero over ~5 shots
Long-termNot tested

Leica PRS

5-30x56 · Rokslide field eval · source

Tracking / RTZPass — spot-on at 7.2 mils; RTZ no issues
18″ dropsFail — shifted on the first 18″ drop; source describes it as not severe
36″ (single)Fail — shifted high-right and generally stayed there
3×36″Shift — 0.4 mil high / 0.2 mil right at recheck; one adjustment returned it to center
Long-termNot tested

Leupold Mark 4 HD

2.5-10x42 · FFP · Rokslide field eval · source

Tracking / RTZPass — 200+ mils dialed between shots, no issues
18″ dropsPass
36″ (single)Fail — first 36″ drop shifted zero (sample #1)
3×36″Shift — held the eval, then shifted 0.5 mil on the very next shot (sample #2)
Long-termShift — confirmed 0.2 mil high on follow-up shooting

Leupold Mark 5HD (sample #1)

3.6-18x44 · Rokslide field eval · source

Tracking / RTZPass — RTZ and adjustments correct; groups ran wider than expected left-right
18″ dropsNot tested — outcome not stated in the retained record
36″ (single)Shift — 0.3 mil right, attributed to the 36″ drops collectively
3×36″Shift — 0.3 mil right, attributed to the 36″ drops collectively
Long-termFail — failed totally at 65 rounds — would not group, hold zero, or adjust after multiple remounts

Leupold Mark 5HD (sample #2)

5-25x56 · FFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsShift — 0.2 mil from the right-side, 0.4 mil from the top 18″ drop
36″ (single)Shift — third 36″ drop over 0.5 mil high
3×36″Fail — over 1 mil high-right from the 3×36″ series
Long-termFail — needed re-zeroing twice in three weeks riding unabused on a stable rifle

Leupold Ultra M3A (Mark 4 fixed 10x)

10x40 (fixed) · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass
36″ (single)Pass — possible ≈0.1 mil on 36″ drops; zero unchanged after the eval
3×36″Pass
Long-termPass — 50,000+ rounds of documented service use; returned to regular use in 2024

Leupold Vari-X II

2-7x33 · SFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass — no major shifts from 18″ drops
36″ (single)Fail — first large shift on the 36″ left-side impact
3×36″Fail — 36″ drops caused major shifts
Long-termNot tested

Leupold VX-3HD CDS-ZL

3.5-10x40 · SFP · Rokslide field eval · source

Tracking / RTZFail — RTZ threw fliers that would miss deer vitals at ~400 yd; tracking heavily compromised per source
18″ dropsFail — first 18″ left drop shifted ≈2.5 MOA; erratic through the series
36″ (single)Fail
3×36″Fail — would no longer group after; source: the erector is busted
Long-termFail — lost zero from an 8–9 mile forest-road truck ride before any drops

Leupold VX-3HD CDS-ZL

2.5-8x36 · Rokslide field eval · source

Tracking / RTZPass — RTZ clean; 12.25 MOA dialed vs 12.3 measured, zero trending slightly low
18″ dropsFail — lost zero on the first drop; 1–2 MOA shifts on soft soil onto a pad
36″ (single)Fail — cumulative correction after the full sequence: down 2 / right 2.75 MOA
3×36″Fail — 36″ outcomes reported in aggregate — zero already lost from 18″
Long-termFail — shifted 0.5–0.75 MOA, then nearly 2 MOA, from truck rides alone in 3 days

Leupold VX5-HD (sample #1)

3-15x44 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — shifted POI with every drop
36″ (single)Fail — shifted POI with every drop
3×36″Fail — ended 7–8 inches high-left — total failure per source
Long-termNot tested

Leupold VX5-HD (sample #2)

3-15x44 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — shifted POI off the dot on the top 18″ drop
36″ (single)Fail
3×36″Fail — ended 8 inches left at the end of the drop portion
Long-termNot tested

Leupold VX6-HD CDS-ZL2

3-18x44 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsShift — ≈1 MOA right through the single 18″/36″ drops
36″ (single)Shift — ≈1 MOA right through the single 18″/36″ drops
3×36″Fail — shots at/off the paper's edge after the 9×36″ series — complete failure per source
Long-termNot tested

Leupold VX6-HD CDS-ZL2

3-18x50 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — shifted slightly on the first 18″ drop
36″ (single)Fail — settled high until the top 36″ drop shifted it again
3×36″Fail — 9×36″ went off the whole target — over a 21-inch shift
Long-termNot tested

March FX

4.5-28x52 · FFP · Rokslide field eval · source

Tracking / RTZPass — RTZ fine; 7.8 mils measured between dots
18″ dropsPass
36″ (single)Pass
3×36″Pass
Long-termFail — sent for warranty after consistently losing zero — random elevation shifts in two ring sets

March FX Dual Focal Plane

1.5-15x42 · Rokslide field eval · source

Tracking / RTZPass — adjusted at 7.2 mils to under 2%
18″ dropsPass
36″ (single)Pass
3×36″Pass
Long-termShift — holding ≈0.5 mil off by 300–400 rounds; scope pulled for warranty

Maven CRS.3

4-20x50 · Rokslide field eval · source

Tracking / RTZPass — RTZ clean — returned to zero perfectly after the drops
18″ dropsFail — shifted in the expected direction with every drop
36″ (single)Fail — 36″ drops shifted farther than 18″ drops
3×36″Fail — failed across the board, but returned to zero once the drops stopped
Long-termNot tested

Maven RS.3

5-30x50 · FFP · Rokslide field eval · source

Tracking / RTZFail — rough-measured ≈101–105% of dialed value; source declined to grade it
18″ dropsFail — parallax-side 18″ drop landed off the cardboard entirely (harsher surface than standard)
36″ (single)Fail — windage-side 36″ near the cardboard edge; elevation-side 36″ broke the rifle stock
3×36″Not tested — never reached — the rifle stock broke
Long-termNot tested

Maven RS.5

4-24x50 · SFP · Rokslide field eval · source

Tracking / RTZFail — adjustment under 2%, but the zero shifted 0.2–0.3 mil three times before the drops
18″ dropsFail — first 18″ drop produced a 21.5-inch shift; later 18″ drops shifted ≈0.4–0.5 mil
36″ (single)Fail — modified 6/12/18/36″ progression — shifted at 12″ and above
3×36″Fail — shifts on almost every one of 30 drops across both evals
Long-termPass — single truck-ride zero check held — within an otherwise failed eval

Maven RS.6

1-10x28 · Rokslide field eval · source

Tracking / RTZFail — turret rev-indicator skipped and locked twice during RTZ; adjustment value off 7% at 7.2 mils
18″ dropsShift — 0.1 mil up / 0.1 mil right on the first 18″ right drop; did not move again
36″ (single)Pass
3×36″Pass
Long-termNot tested

Maven RS1 (original)

2.5-15x44 · Rokslide field eval · source

Tracking / RTZFail — adjustment within 2%, but repeatedly needed 0.5–0.75 MOA re-zero
18″ dropsFail — first 18″ left drop shifted it off the dot
36″ (single)Fail — predictable directional shifts with each drop side
3×36″Fail — consistently needed 0.5–0.75 MOA re-zero after each drop eval
Long-termNot tested

Maven RS1.2

2.5-15x44 · FFP · Rokslide field eval · source

Tracking / RTZPass — 2,000+ mils dialed on RTZ, no issues
18″ dropsPass
36″ (single)Pass
3×36″Pass — held through three full drop evals — 36 drops from 36″
Long-termPass — 500+ rounds to 864 yd on a course rifle, no issues

Meopta Optika6 RD FFP

3-18x50 · FFP · Rokslide field eval · source

Tracking / RTZPass — within 1% at 10.4 mils; thousands of mils cycled on RTZ, no issues
18″ dropsPass — modified early protocol: 12″ drops (not 18″)
36″ (single)Pass — two 36″ drops only
3×36″Not tested
Long-termFail — failed at just under 3,000 centerfire (+~2,500 rimfire) rounds — documented by the evaluator in the Tangent Theta eval thread

Minox ZP5 THLR

5-25x56 · Rokslide field eval · source

Tracking / RTZPass — under 1% at 7.5 mils; RTZ correct
18″ dropsPass
36″ (single)Pass
3×36″Pass — held zero through the full drop eval (reported as one summary)
Long-termPass — a year of heavy use and abuse, still zeroed

Nightforce ATACR F1

4-16x42 · FFP · Rokslide field eval · source

Tracking / RTZPass — static tracking board: under 1% error at 20 mils
18″ dropsPass
36″ (single)Pass
3×36″Pass
Long-termPass — a decade of abuse, hundreds of drops; reticle lens cracked in a 15-ft drop — never lost zero

Nightforce NX8 F1

4-32x50 · FFP · Rokslide field eval · source

Tracking / RTZPass — 2,000+ mils dialed on RTZ, adjustments within 1%
18″ dropsPass
36″ (single)Pass
3×36″Pass — no zero shift across all 15 drops
Long-termNot tested

Nightforce SHV

3-10x40 · SFP · Rokslide field eval · source

Tracking / RTZFail — click value off ≈6% (consistent); zeroing and RTZ clean
18″ dropsPass
36″ (single)Pass — clean at 25 in-lb caps; first series at 18 in-lb shifted — source attributes to ring slip
3×36″Pass — 28-drop all-36″ repeat series; only a beyond-protocol mid-chest drop shifted (0.25 MOA correction)
Long-termPass — 3,000+ rounds completed Oct 2024, no issues

Primary Arms SLx FFP

4-14x44 · FFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — shifted on the first 18″ left drop, shifted back on the right
36″ (single)Fail — left 36″ drop shifted POI
3×36″Fail — 9×36″ series shifted POI as well
Long-termNot tested

Revic Acura

5-25x50 · Rokslide field eval · source

Tracking / RTZPass — adjusted exactly as dialed (24.5 MOA); RTZ clean
18″ dropsPass
36″ (single)Pass
3×36″Pass
Long-termNot tested

Riton 3-18x44 SFP

3-18x44 · SFP · Rokslide field eval · source

Tracking / RTZFail — inconsistent adjustment values during zeroing; no formal box test
18″ dropsFail — did not hold zero (aggregate result; stage completion beyond 18″ unstated)
36″ (single)Not tested
3×36″Not tested
Long-termNot tested

Schmidt & Bender Klassik

8x56 (fixed) · Rokslide field eval · source

Tracking / RTZNot tested — explicitly not conducted beyond zeroing
18″ dropsPass — full repeat eval clean after remount; first attempt slipped in the rings at 18 in-lb
36″ (single)Pass
3×36″Pass — all rounds at baseline group size through the repeated eval
Long-termNot tested

Sightmark Presidio

3-18x50 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — lost zero on the very first 18″ drop and every drop after; eval stopped
36″ (single)Not tested
3×36″Not tested
Long-termNot tested

Sightron S-Tac FFP

3-16x42 · FFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — lost zero on the first 18″ left drop and the rest; turret visibly leaning after
36″ (single)Not tested
3×36″Not tested
Long-termNot tested

Sightron S6 LRT

1-6x24 · FFP · Rokslide field eval · source

Tracking / RTZPass — RTZ clean; dial-up complicated by an ammo change and mirage — no numeric error stated
18″ dropsPass — first run shifted on the right 18″ at 18 in-lb; clean after re-torque
36″ (single)Pass
3×36″Pass
Long-termNot tested

Sightron STAC SFP

1-6x24 · SFP · Rokslide field eval · source

Tracking / RTZFail — 7% adjustment error at 24.75 MOA; RTZ clean
18″ dropsPass — second eval clean; first shifted 0.5 MOA at 18 in-lb caps — attributed to ring torque
36″ (single)Pass
3×36″Pass
Long-termNot tested

Swarovski Z3

3-10x42 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — drop eval a total failure per source
36″ (single)Fail — top 36″ drop blurred the image and appears to have bent the eyepiece
3×36″Not tested
Long-termNot tested

Swarovski Z5i +

3.5-18x50 · SFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass
36″ (single)Fail — left 36″ shifted ≈4 MOA; right 36″ shifted off paper
3×36″Fail — shifted ≈10 MOA right on the 9×36″ portion
Long-termNot tested

SWFA SS Gen II

3-15x42 · Rokslide field eval · source

Tracking / RTZPass — 200+ mils dialed between shots, no issues
18″ dropsPass
36″ (single)Pass
3×36″Pass — harder variant run: 18 drops from 44″ instead of 9×36″; one shot at the edge of the rifle's cone
Long-termNot tested

SWFA SS MQ

6x42 (fixed) · Rokslide field eval · source

Tracking / RTZPass — 2,000+ mils dialed on RTZ, no issues
18″ dropsPass
36″ (single)Pass
3×36″Pass
Long-termPass — ~3,000 rounds of continued use by multiple shooters, no issues

SWFA SS Ultra Lite

2.5-10x32 · SFP · Rokslide field eval · source

Tracking / RTZPass — RTZ spot-on; possible 2–3% at 27.5 MOA — at live-fire resolution
18″ dropsPass — maybe a slight shift from the top drop (improvised non-pic rings)
36″ (single)Shift — ≈0.5 MOA from the top 36″ drop (improvised rings run)
3×36″Shift — 0.5–0.75 MOA shift ~20–30% of the time across 54 consecutive 36″ drops (proper rings, modified protocol)
Long-termNot tested

Tangent Theta TT315M Professional Marksman

3-15x50 · FFP · Rokslide field eval · source

Tracking / RTZPass — ≈1.5% at the live-fire check — within shooting margin
18″ dropsShift — 0.2 mil high from the top 18″ drop; settled back to zero on the next shot
36″ (single)Pass — no shifts at all
3×36″Shift — 0.3 mil down after the 3×3 series, confirmed by further shooting
Long-termNot tested

Tract Toric Ultra HD

3-15x50 · Rokslide field eval · source

Tracking / RTZPass — no formal box test — zeroing and adjustment observed clean before and after drops
18″ dropsShift — 0.5 MOA left on the first 18″ left drop, then held through the rest
36″ (single)Fail — left 36″ shifted ≈6 inches; a post-remount top 36″ drop shifted 3 MOA high
3×36″Fail — confirmed 3.75 MOA high / 6.5 MOA left after the 3×3 series
Long-termNot tested

Trijicon Credo

3-9x40 · SFP · Rokslide field eval · source

Tracking / RTZFail — 9% adjustment error at 23.75 MOA dialed — possibly end-of-travel per source
18″ dropsPass
36″ (single)Pass
3×36″Shift — ≈1.25 MOA high-right after the 9×36″ series; recoil reset it back to zero
Long-termPass — dialed to 770 yd, multiple drops and UTV days — no issues

Trijicon Credo HX

2.5-15x42 · SFP · Rokslide field eval · source

Tracking / RTZPass — 2,000+ MOA dialed on RTZ, no issues
18″ dropsPass
36″ (single)Pass
3×36″Pass — held zero through the entire drop portion
Long-termPass — ~3,577 rounds, nothing to report per source

Trijicon Huron

3-9x40 · SFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass
36″ (single)Pass
3×36″Pass — no issues through the full drop evaluation
Long-termNot tested

Trijicon Tenmile

3-18x44 · FFP · Rokslide field eval · source

Tracking / RTZPass
18″ dropsPass
36″ (single)Pass — possible ≤0.1 mil on one 36″ drop — within the zero's cone per source
3×36″Pass — later session: 36 drops from 36″ in one day, still held
Long-termPass — 3,000+ rounds, cross-country travel, elk to 803 yd — passed

Vector Optics Continental

2-12x44 · Rokslide field eval · source

Tracking / RTZPass — RTZ clean; 6.9–7.0 mils measured between dots
18″ dropsFail — first 18″ left-side drop shifted the zero
36″ (single)Fail — roughly held the shifted point until the 9×36″ series
3×36″Fail — 9×36″ series brought it off the target's left side
Long-termNot tested

Vortex Razor Gen III

6-36x56 · Rokslide field eval · source

Tracking / RTZFail — RTZ climbed higher with every shot after the first
18″ dropsFail — aggregate: would not stay zeroed regardless of mounting
36″ (single)Fail — aggregate: would not stay zeroed regardless of mounting
3×36″Fail — aggregate: would not stay zeroed regardless of mounting
Long-termFail — random 0.2–0.4 mil vertical shifts while control scopes held for hundreds of rounds

Vortex Razor HD LHT

4.5-22x50 · Rokslide field eval · source

Tracking / RTZPass — 7.9 mils actual on 7.8 dialed — within 2%
18″ dropsFail — first 18″ drop shifted 0.7 mil elevation / 0.4 mil windage
36″ (single)Fail — every drop at both heights shifted POI
3×36″Not tested
Long-termFail — lost zero riding in a truck 678 miles; 6–8″ drops shifted 0.3–0.5 mil

Zeiss LRP S3

6-36x56 · Rokslide field eval · source

Tracking / RTZPass — under 2% at 7.2 mils — within live-fire resolution
18″ dropsPass
36″ (single)Pass
3×36″Pass
Long-termPass — several hundred rounds to 1,160 yd, hard truck use — worked correctly

Zeiss LRP S5

3-18x50 · Rokslide field eval · source

Tracking / RTZFail — adjustment-value errors during zeroing in both ring setups; erratic impact jumps
18″ dropsPass — redo run: 18″ went OK
36″ (single)Fail — 0.4 mil from the first left 36″ (redo); run-1 shifts clear; final redo drop reported photo-only
3×36″Fail — run 1: off the paper — measured 8.5 mil (30.6″) shift
Long-termFail — lost up to 1 mil over two months riding in a padded seat; re-zeroed multiple times

Zeiss V4

4-16x44 · Rokslide field eval · source

Tracking / RTZPass — RTZ and 24.25 MOA dial-up clean
18″ dropsFail — 0.5–0.75 MOA shifts from the 18″ drops
36″ (single)Fail — ≈1–1.25 MOA; shifted on nearly every drop at both heights
3×36″Not tested
Long-termNot tested

Zero Compromise Optic ZC420

4-20x50 · Rokslide field eval · source

Tracking / RTZPass — ≈0.1 mil short at 8 mils — under 2%, within live-fire resolution
18″ dropsFail — shifted zero on the 18″ right drop
36″ (single)Fail — left 36″ drop lost zero 5–6 inches left
3×36″Shift — stabilized 0.4 mil high after the 9×36″ series
Long-termShift — ≈0.3 mil shift after 200 truck miles and a week at rest

ZeroTech Thrive HD Micro Prism

1x20 (prism) · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass — drops run as one block — group opened slightly, center stayed zeroed
36″ (single)Pass — drops run as one block — group opened slightly, center stayed zeroed
3×36″Pass — drops run as one block — group opened slightly, center stayed zeroed
Long-termNot tested

ZeroTech Trace ADV

4-24x50 · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsPass — right-side 18″ possibly within the zero's cone per source
36″ (single)Fail — right-side 36″ drop shifted 2 mils right
3×36″Fail — 9×36″ series shifted 3+ mils right
Long-termNot tested

ZeroTech Trace FFP

3-18x50 · FFP · Rokslide field eval · source

Tracking / RTZNot tested
18″ dropsFail — shifted with every drop
36″ (single)Fail — shifted with every drop
3×36″Fail — shifted with every drop
Long-termFail — out of the zero cone after 3 days and ~50 miles of transport

PassShift (measured zero shift — magnitude on hover or on the scope's page)FailNot tested (never collapsed into a pass) · * has detail

Read this before you rank anything

Most rows are one serial number, tested once. That is evidence, not a verdict on every unit a brand ships. The stage columns are the product — any summary that collapses them throws away exactly the information you came for. Mount setup matters: rows where the source didn't confirm ring torque carry that caveat on the scope's page. And the testing labor is the evaluators' — every row links to the original write-up, which is always worth reading in full.

Is your own scope wandering? Start with the diagnostic guide — most "scope won't hold zero" cases are the mount, and the fix costs a paint pen and an afternoon.

Corrections and disputes — including from evaluators about their own rows — are welcome via the contact page. The provenance page keeps the public corrections log.