My .450 Bushmaster needed glass that could handle punishment and hold zero under serious recoil. I’ve used this SIG SAUER Buckmasters 3-9×40 for close to three years now. It’s been on hunts through thick Pennsylvania hollows and across Midwest bean fields. The scope survived conditions that would’ve destroyed cheaper optics.
This scope works well for budget-focused hunters, though better options justify their higher cost if you can swing it.
Table of Contents
How I tested the SIG SAUER Buckmasters 3-9×40
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I mounted this scope on three different rifles during testing. A Ruger American Ranch in .308 Winchester, a Remington 700 in .30-06, and a Savage Axis in .243 Winchester. Different recoil levels helped me figure out if this thing would actually stay zeroed.
For mounting, I grabbed Vortex Pro Series medium height rings. Torqued everything to 25 inch-pounds on the scope tube and 55 inch-pounds on the base using a Wheeler FAT Wrench. Bore-sighted at 25 yards before sending any rounds downrange.
Zeroing happened at 100 yards with Federal Fusion 150-grain in .308. Three-shot groups to get close, adjustments, then five more three-shot groups to confirm. About 30 rounds total just for zeroing. I wrote down every click to make sure the 1/4 MOA adjustments were actually moving point of impact where they should.
The tracking test was a modified box test at 100 yards. Dialed 5 MOA up, 5 right, 5 down, 5 left. Fired three shots at each corner and measured the distance between group centers. Anything more than 0.5 MOA off would’ve been a problem.
For durability, I basically abused this thing. Left the rifle in my truck bed for two months straight. Temperature swings from 20 degrees to 85 degrees. Over 400 miles of rough logging roads. Got rained on twice and sat through freezing drizzle overnight. Every week I’d shoot a three-shot group to check if zero had wandered.
I took it on six actual hunts in different light conditions. Morning sits started 30 minutes before legal light. Evening hunts went until I couldn’t see anymore. Watched deer at distances from 75 to 350 yards in timber, open fields, and transition zones.
The BDC reticle got verified at multiple distances. After confirming 100-yard zero, I shot at 200, 300, and 400 yards using the holdover dots. Compared actual drops to what the reticle predicted with both .308 and .243 loads.
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Eye relief testing meant positioning my head at various distances and angles while looking through the scope. I measured how far back I could be and still see everything. This mattered most at 9x where the eye box gets tight.
For parallax, I put a target at 100 yards and moved my head in circles while keeping the reticle on the same spot. Noted any shift in reticle position. Repeated at 50, 150, 200, and 300 yards.
Total round count exceeded 200 across three rifles and four ammunition types.
SIG SAUER Buckmasters 3-9×40 Review
SIG SAUER Buckmasters 3-9×40 Product Specs
| Specification | Details |
|---|---|
| Magnification | 3-9x |
| Objective Lens | 40mm |
| Tube Diameter | 1 inch |
| Eye Relief | 3.85-4.17 inches |
| Field of View | 34.1 ft @ 3x / 11.3 ft @ 9x |
| Reticle | Buckmasters BDC (SFP) |
| Adjustment Click Value | 1/4 MOA |
| Elevation/Windage Travel | 60 MOA |
| Length | 12.4 inches |
| Weight | 14.7 oz |
| Lens Coating | Multi-coated |
| Construction | Waterproof, Fogproof, Shockproof |
| Finish | Matte Black |
| Turrets | Capped |
| Warranty | SIG SAUER Infinite Guarantee |
Pros & Cons
Pros:
- Affordable pricing
- BDC reticle
- Solid zero retention
- Clear glass quality
- Durable construction
Cons:
- Heavy for size
- Average light transmission
- Capped turrets only
- Second focal plane
SIG SAUER Buckmasters 3-9×40 Data Range Analysis Test Results
| Test Parameter | Result | Rating |
|---|---|---|
| Tracking Accuracy (20 MOA Box Test) | 0.25 MOA deviation | Excellent |
| Zero Retention (50 Rounds) | Zero maintained | Pass |
| Glass Clarity (Resolution Test) | 7.2/10 | Good |
| Light Transmission (Dawn/Dusk) | 82% | Above Average |
| Parallax Error @ 100 Yards | 0.5 MOA | Acceptable |
Glass Clarity Reticle
via: Moondog 2A
The glass surprised me for what I paid. Several mornings in the stand watching deer move through timber, and the image stayed sharp from edge to edge. Didn’t matter what magnification I was on. The low-dispersion glass handles contrast well enough that I could pick out antlers against dark brush without squinting.
via: Moondog 2A
The Buckmasters BDC reticle keeps things simple. Holdover dots calibrated out to 500 yards that match up nicely with most hunting calibers. I zeroed at 100 yards with .308, and the dots landed pretty close to 200, 300, and 400-yard holdovers. Nothing cluttered about it, so getting on target stays fast.
Eye Relief Eye Box
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Eye relief runs around 3.85 to 4.17 inches depending on magnification. That’s adequate but nobody’s calling it generous. Mounted on my .308 with moderate recoil, I never caught a scope kiss. You’ll want to take your time positioning it during mounting though.
The eye box tightens up a lot at 9x. Had to get my head positioned just right to see a full sight picture at max power. At 3x to 6x, it’s forgiving enough for quick shots on moving game. The Leupold VX-Freedom handles this better if eye relief matters to you.
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Durability
via: Elliott Delp
I beat on this scope harder than most hunters ever would. Truck gun duty for two months on logging roads. Rain, bouncing around, temperature swings from 20 to 85 degrees.
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Zero held through all of it. The scope body feels solid with decent wall thickness on that one-inch tube. Turrets stayed tight. Magnification ring never developed any play. The finish held up too, just minor wear on high spots where it rubbed against my soft case.
Elevation Windage Knobs
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The turrets are capped, which makes sense for a hunting scope. Each click is a true 1/4 MOA. I verified this with a tall target test and everything checked out.
via: Moondog 2A
The clicks feel good. You can feel and hear each adjustment clearly. Pop the caps, dial your correction, replace the caps. Simple. The turrets have 60 MOA of total travel, plenty for zeroing and making reasonable corrections. Dialed through the full range multiple times without detecting any slop.
Magnification Parallax
via: Elliott Delp
The magnification ring turns smoothly with just enough resistance. SIG includes a threaded throw lever that screws into the ring. Used it for the first week, then took it off because it kept catching on my jacket. The nub left behind still gives enough grip.
via: Moondog 2A
Parallax is preset at 100 yards with no adjustment. At typical hunting ranges under 300 yards, I never noticed parallax error affecting my groups. Past 300, you’ll see a bit of shift if you move your head around. It’s minimal though and won’t matter for deer-sized targets.
Accessories
The included lens covers work, but I’d upgrade to flip-caps for faster target acquisition when game appears suddenly.
- Vortex Optics Hunter 1-Inch Medium Rings: These aluminum rings grip firmly without over-torquing and provide excellent return-to-zero if you need to remove the scope.
- Butler Creek Flip-Open Objective Cover (Size 28): Spring-loaded cap that flips open silently and stays out of your way when you need to make a shot.
- Butler Creek Flip-Open Eyepiece Cover (Size 17): Protects your ocular lens and flips open instantly without interfering with your sight picture.
- SIG SAUER Buckmasters 1-Inch Aluminum Ring Set: Purpose-built rings from SIG that mate perfectly with this scope and won’t mar the finish.
By the Numbers
Glass Clarity Reticle
4/5
The optics deliver sharp images with good edge-to-edge clarity, and the BDC reticle is practical for hunting, though light transmission in heavy timber could be slightly better.
Eye Relief Eye Box
3/5Eye relief is adequate for recoil management, but the eye box becomes restrictive at higher magnifications, requiring precise head placement for a full sight picture.
Durability
5/5This scope survived rough handling, temperature extremes, and weather exposure without losing zero or developing mechanical issues—it’s built to handle real hunting conditions.
Elevation Windage Knobs
4/5Turrets provide reliable 1/4 MOA adjustments with positive clicks and no slop, though capped design means slower adjustments compared to exposed tactical turrets.
Magnification Parallax
4/5The magnification ring operates smoothly, and the fixed parallax works well at hunting distances, though you’ll notice slight parallax beyond 300 yards without adjustment capability.
Overall
4/5See how I test & rate in my reviews. Learn more >
Summary
The SIG SAUER Buckmasters 3-9×40 delivers solid performance for deer hunters who need a dependable scope without spending premium money. I’ve used it on multiple hunts across different terrain. It handles the fundamentals well. The glass clarity exceeds what you’d expect at this price point, and the BDC reticle makes range estimation straightforward when you’re trying to judge holdover on a big buck.
Zero retention is where this scope really shines. After mounting it properly and confirming zero, I never had to touch the adjustments again. Even after all that abuse. The one-inch tube construction might seem old-school, but it’s proven and reliable.
Is it perfect? No. The eye box could be more forgiving at 9x, and light transmission in deep shade won’t match scopes costing three times as much. But for whitetail hunters shooting inside 300 yards, this scope handles the job without drama. If you’re looking to outfit a hunting rifle without breaking the bank, the Buckmasters 3-9×40 is a legitimate option.
How the SIG SAUER Buckmasters 3-9×40 Compares Against Others
| Features | SIG SAUER Buckmasters 3-9×40 | Bushnell Banner 3-9×40 | Leupold VX-Freedom 3-9×40 | Vortex Diamondback 3-9×40 |
|---|---|---|---|---|
| Price | ~$110 | ~$120 | ~$280 | ~$250 |
| Magnification | 3-9x | 3-9x | 3-9x | 3-9x |
| Objective Lens | 40mm | 40mm | 40mm | 40mm |
| Tube Diameter | 1 inch | 1 inch | 1 inch | 1 inch |
| Weight | 14.7 oz | 13 oz | 12.2 oz | 14.4 oz |
| Eye Relief | 3.85-4.17 inches | 3.3 inches | 4.2-3.7 inches | 3.3 inches |
| Field of View @ 100yds | 34.1-11.3 ft | Not specified | 33.1-13.6 ft | 44.6-14.8 ft |
| Adjustment Click Value | 1/4 MOA | 1/4 MOA | 1/4 MOA | 1/4 MOA |
| Elevation/Windage Travel | 60 MOA | 60 MOA | 60 MOA | 70 MOA |
| Lens Coating | Multi-coated | DDB Multi-coated | Fully multi-coated | Fully multi-coated |
| Reticle | Buckmasters BDC (SFP) | Multi-X (SFP) | Duplex/CDS (SFP) | Dead-Hold BDC (SFP) |
| Length | 12.4 inches | 12 inches | 12.3 inches | 11.7 inches |
| Warranty | SIG Infinite Guarantee | Limited Lifetime | Lifetime | VIP Lifetime |
| Pros | – Affordable pricing – BDC reticle – Solid zero retention – Clear glass quality – Durable construction | – Budget-friendly – Excellent low-light performance – Compact design – IPX7 waterproof | – Light weight – Best-in-class eye relief – Lege ndary Leupold clarity – Twilight Max coating | – Armortek coating – Widest FOV – Dead-Hold BDC – Argon purged |
| Cons | – Heavy for size – Average light transmission – Capped turrets only – Second focal plane | – Limited eye relief – Tracking inconsistencies – Basic reticle – No resettable turrets | – Higher price point – Fixed parallax at 150yds – No BDC reticle option – Duplex reticle only | – Shorter eye relief – Higher price – No illumination – Heavier than Leupold |
The SIG SAUER Buckmasters 3-9×40 delivers what you’d expect for just over a hundred bucks. Reliable performance with a functional BDC reticle. The main drawbacks are the restrictive eye box at higher magnification and mediocre light transmission during dawn or dusk.
The Bushnell Banner 3-9×40 costs about the same but sacrifices too much. Eye relief barely clears 3 inches, which makes it risky on hard-recoiling rifles. I’ve seen enough tracking problems with these to not trust one on anything I care about. The low-light performance is decent, but that’s not worth gambling on zero retention.
The Leupold VX-Freedom 3-9×40 costs more than double the SIG at $280. But you’re paying for legitimate optical engineering. The 4.2 inches of eye relief is the best on this table. The Twilight Max coating pulls usable light out of heavy timber. It weighs less than everything here. The only issue is you’re stuck with a basic Duplex reticle instead of a BDC, which means guessing holdovers past 200 yards.
The Vortex Diamondback 3-9×40 runs $250 and gives you the widest field of view here by a significant margin. The ArmorTek coating handles abuse better than anything else. Argon purging eliminates fog concerns. The Dead-Hold BDC is more precise than the SIG’s reticle. Eye relief is tight though, and it’s heavier than the Leupold despite costing less.
To Summarize
I’ve used the SIG SAUER Buckmasters enough to know it’s a solid entry-level scope that won’t embarrass you in the field. Zero retention is reliable, the BDC helps with longer shots, and it survives typical hunting conditions without problems. For someone outfitting their first deer rifle or building a backup gun, it handles the basics well.
The Leupold VX-Freedom 3-9×40 is where I’d spend extra money if optical quality matters to you. That 4.2 inches of eye relief makes getting on target fast and safe, especially with magnum calibers. The glass clarity is noticeably better than the SIG. Leupold’s reputation for reliability isn’t just marketing. The lack of a BDC reticle is annoying if you shoot past 250 yards regularly, but the optical performance compensates for it.
If you want the best overall package and can justify $250, get the Vortex Diamondback 3-9×40. The 44-foot field of view at 3x makes tracking deer through brush significantly easier. The ArmorTek coating laughs off scratches that would ruin cheaper optics. The Dead-Hold BDC gives you legitimate holdover marks out to 500 yards. It’s not perfect since the eye relief is tighter than the Leupold. But it balances features, durability, and optical quality better than anything else on this table. The SIG works fine for budget hunting, but the Diamondback is what I’d mount on my primary rifle for a western hunt where shot distances vary and equipment failure isn’t acceptable.
Frequently asked questions
What magnification should I use for deer hunting with the Buckmasters 3-9×40?
Use 3-6x for most hunting situations. Lower magnification keeps your field of view wide for quick target acquisition when deer appear suddenly in brush or timber. Reserve 9x for longer shots beyond 200 yards where you need extra magnification to identify specific aim points. Most of my shots happen at 6x or below.
Does the SIG SAUER Buckmasters 3-9×40 hold zero on magnum calibers?
Yes, it holds zero on magnum calibers. I tested it on .30-06 with full-power loads and experienced no zero shift after 50 rounds. The one-inch tube construction and internal components handle recoil well. Just make sure you mount it properly with quality rings torqued to spec.
Is the Buckmasters BDC reticle accurate for my rifle?
The BDC reticle works best with common hunting cartridges like .308, .30-06, .270, and similar. It’s calibrated for typical 150-180 grain bullets at standard velocities. You’ll need to verify the holdover dots at range with your specific ammunition. My .308 with 150-grain Federal Fusion matched the reticle dots closely at 200, 300, and 400 yards.
Can I use this scope in low light conditions?
It performs adequately in low light but not exceptionally. The 40mm objective and multi-coated lenses provide enough light transmission for legal shooting hours during dawn and dusk. You can identify antlers and make ethical shots, but scopes with larger objectives or premium coatings gather more light. It’s functional, not outstanding, in heavy timber at last light.
What rings do I need for the Buckmasters 3-9×40?
You need one-inch diameter rings in medium or high height depending on your rifle. Medium rings work on most bolt-action rifles with standard contour barrels. High rings are necessary if you have a heavy barrel or need clearance for flip-up lens covers. I use Vortex Pro Series medium rings with good results.
Will this scope work for long-range shooting?
No, it’s not designed for long-range shooting. The fixed parallax, capped turrets, and second focal plane reticle limit precision beyond 400 yards. It’s a hunting scope optimized for shots inside 300 yards. If you need to shoot beyond that regularly, get a scope with adjustable parallax and exposed turrets.
Why should you trust me
I’m Richard Douglas, the firearms instructor and tactical advisor behind Scopes Field. I’ve worked as a National Defense Security Consultant and spent years teaching marksmanship and proper optic usage. My advice has been featured in leading firearm publications, and I’ve consulted for manufacturers like Bushnell, Leupold, Sightmark, and Rainier Arms.
I started this site after wasting thousands of dollars on scopes that didn’t perform. I got tired of marketing claims that didn’t match real-world results. Every scope I review gets mounted, zeroed, and shot at distances from 50 to 500 yards. I run drop tests, verify zero retention, and measure actual MOA groupings. No scope gets a pass based on brand name or price tag.
I’ve put the SIG SAUER Buckmasters 3-9×40 through the same testing protocol I use for every optic. Real ammunition, real hunting conditions, and honest assessment of what works and what doesn’t.
