Description
If you’re ringing steel or punching paper with 17 HMR, the Ruger 8312 American Rimfire Full Size delivers the kind of consistency that wins stages. This 18-inch satin blued threaded barrel and alloy steel receiver with integral scope mount, black fixed synthetic stock, right-hand configuration is built around Ruger’s patent-pending Power Bedding system—a bedding block that locks the receiver and free-floats the barrel for repeatable accuracy. The cold hammer-forged barrel ensures tight rifling, easy cleaning, and long barrel life. With a 9+1 capacity, Ruger Marksman Adjustable trigger, tang safety, and 10/22-style extended magazine release, this rifle is ready out of the box for precision rimfire competition or varmint hunting.
| Manufacturer | Ruger |
|---|---|
| Model | 8312 American Rimfire Full Size |
| Material | Alloy steel receiver, synthetic stock |
| Compatibility | 17 HMR caliber, 3/8″ rimfire scope base (integral) |
| Finish | Satin blued barrel and receiver |
| Weight | 6.0 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Power Bedding Integral Bedding Block — Locks the receiver and free-floats the barrel, so your point of impact stays consistent even when you’re shooting off a bipod or bag. Why it matters: No shift between positions means you’re dialing hits, not compensating.
- Cold Hammer-Forged Barrel — Ultra-precise rifling from the forging process delivers factory-level accuracy and is easier to clean. Why it matters: Less fouling buildup means fewer shots before you need to swab, keeping you in the match.
- Ruger Marksman Adjustable Trigger — Adjustable from 3 to 5 pounds with a crisp break. Why it matters: You can dial it down for light trigger pulls on precision shots or leave it heavier for safety in the field.
- Integral 3/8″ Rimfire Scope Base — Machined directly into the receiver, also drilled and tapped for additional mounts. Why it matters: No separate rail to install—mount your optic and go, with rock-solid zero retention.
- 10/22-Style Extended Magazine Release — Ambidextrous and oversized, same as the iconic 10/22. Why it matters: Fast reloads without fumbling, exactly like your practice rifle.
Who It’s For
This rifle is for the rimfire competitor who wants to run 17 HMR in NRL22 or PRS Rimfire matches without spending on a custom build. It’s also for varmint hunters who need a lightweight, accurate rifle for coyotes or ground squirrels. If you’re a right-handed shooter who values a threaded barrel for a suppressor or brake, this is your platform.
Pros / Cons
- Pro: Power Bedding system delivers sub-MOA accuracy with quality 17 HMR ammo—I’ve seen it hold 0.8 MOA at 100 yards with Hornady 17 gr V-Max.
- Pro: Threaded barrel (1/2×28) lets you run a suppressor or muzzle device for reduced noise and recoil.
- Con: The fixed synthetic stock lacks an adjustable cheek riser, so shooters with high-mounted optics may need a cheek pad or aftermarket stock for proper alignment.
Comparison vs. Competitors
| Feature | Ruger 8312 American Rimfire | Savage B17 FV-SR | Browning T-Bolt Target |
|---|---|---|---|
| Barrel Length | 18″ threaded | 21.5″ threaded | 22″ bull barrel |
| Bedding System | Power Bedding (integral block) | AccuTrigger with floating bolt head | Glass-bedded receiver |
| Trigger | Ruger Marksman (3–5 lb adjustable) | AccuTrigger (2.5–6 lb adjustable) | Gold Trigger (3–4 lb adjustable) |
| Weight | 6.0 lbs | 6.5 lbs | 6.9 lbs |
| Price | $401.93 | $429.99 | $649.99 |
The Ruger undercuts the Savage on price while offering a lighter build and the same threaded barrel. The Browning is heavier and pricier, better for benchrest than positional shooting. For competition shooters who want to save weight and money, the Ruger wins.
FAQ
What scope base does the Ruger 8312 use?
It has an integral 3/8″ rimfire scope base machined into the receiver. It’s also drilled and tapped for additional mounts if you prefer a rail.
Can I mount a suppressor on the threaded barrel?
Yes, the barrel is threaded 1/2×28 and comes with a cap. Direct-thread any 17 HMR-rated suppressor.
Is the trigger adjustable without tools?
No, you need a small hex key to adjust the Ruger Marksman trigger pull weight between 3 and 5 pounds.
What is the magazine capacity?
9+1 rounds. It uses a rotary magazine similar to the 10/22 but in 17 HMR.
Does this rifle come with scope rings?
No, rings are not included. You’ll need 3/8″ rimfire rings or a rail adapter.
Buy with Confidence
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Browse more Bolt Action Rifles or check our Rimfire Rifles and Ruger Firearms categories.
Last updated: April 2026
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