Precision Rifle — Sub-MOA Fundamentals
Six lessons covering action, barrel, chassis, optics, bipods/support, and ammunition for the long-range shooter.
Action
Bolt vs semi-auto — and why bolts dominate precision shooting.
A precision rifle's action is the heart of repeatable accuracy. Bolt actions (Remington 700, Tikka T3X, Savage, custom actions) dominate the precision world because they're simpler, more rigid, and easier to time. Semi-autos like the AR-10 platform can be precision-grade but rarely outshoot a tuned bolt.
Bolt actions
Three styles: rear-locking (Remington 700, most clones), front-locking (Mauser, Tikka), and three-lug (Savage 110). All work; modern custom actions (Defiance, Impact, Bighorn, ARC) refine the basics into precision instruments. Mil-spec bolt actions weigh 8-12 lbs assembled; ultra-light versions hit 6-7 lbs.
Trueing and bedding
Even a quality factory action benefits from 'trueing' — squaring the face of the action to the bore. Bedding compounds (Devcon, Marine-Tex) lock the action into the stock for repeatable accuracy. Both are gunsmith work, not DIY for the average shooter.
- Bolt actions dominate precision — simpler, more rigid.
- Remington 700 footprint is the industry standard.
- Trueing and bedding squeeze more accuracy out of factory actions.
FAQ (1)
- Can an AR-10 shoot 1 MOA?
- Yes — quality AR-10s (LaRue, Wilson, Knight's, JP) consistently shoot under 1 MOA with match ammo. They just rarely outshoot a custom bolt gun.
Barrel
Match-grade stainless, fluted contours, and the chamber that defines accuracy.
On a precision rifle, the barrel matters more than anything else. Custom match barrels from Bartlein, Krieger, Hart, Proof Research, and Benchmark are the gold standard — premium materials, precision chambering, and consistent rifling.
Material
416R stainless is the precision-shooting standard — corrosion-resistant, excellent cut-rifling accuracy. Proof Research's carbon-fiber-wrapped barrels save 1-2 lbs while keeping accuracy. Chrome-moly (4150) is fine but heat-prints faster.
Twist rate
Match your twist to your bullet. 6.5 Creedmoor: 1:8" stabilizes 140-147gr ELDs. .308: 1:10" for 168-178gr Bergers. .22 Creedmoor: 1:7" for high-BC 88gr. Underspun bullets = keyholing; overspun bullets = minimal harm.
Chambering
Match chambers are cut to tighter SAAMI specs than factory. A 'tight neck' chamber requires neck-turning brass for reloading but improves consistency. Most factory precision rifles ship with a standard SAAMI chamber — fine for factory ammo.
- Match-grade 416R stainless = the precision standard.
- Twist rate must match bullet weight.
- Custom chambering improves consistency for reloaders.
FAQ (1)
- How long do match barrels last?
- Depends on caliber. 6mm/6.5mm: 2000-3500 rounds. .308: 4000-6000. Magnums burn out faster. Track round count; replace when accuracy degrades.
Chassis & Stock
Aluminum chassis vs traditional stock — and why chassis won.
The chassis (or stock) is what locks the rifle to the shooter. Modern aluminum chassis (MDT, KRG, MPA, Foundation) provide infinite adjustability and consistent bedding. Traditional wood and fiberglass stocks remain in classic hunting and Olympic shooting.
Chassis systems
MDT XRS, MDT ACC, KRG Whiskey-3, Masterpiece Arms MPA, Foundation Genesis. All accept AICS-pattern detachable box magazines, have M-LOK rails for accessories, and offer adjustable length of pull and cheek height.
Traditional stocks
Manners Composite, McMillan, Bell & Carlson — fiberglass shells bedded to a metal pillar. Lighter than chassis, often more attractive, but less adjustable. Preferred by traditional hunters.
- Chassis systems are the modern precision standard.
- Traditional stocks remain for hunting and aesthetics.
- AICS magazine pattern is the de facto industry standard.
FAQ (1)
- Do I need a chassis to shoot precision?
- No — a quality fiberglass stock shoots just as well. Chassis offer adjustability for competition use; traditional stocks are lighter for hunting.
Optics
First focal plane, MIL or MOA, and turret quality.
Precision rifle optics are a different game from carbine red dots. You need high magnification (typically 5-25x or 5-30x), first focal plane reticles for ranging, repeatable turrets, and zero-stop for fast returns.
Magnification
5-25x or 5-30x is the precision-rifle norm. Low end (5x) for fast target acquisition; high end (25-30x) for long-range identification. Variable scopes (Vortex Razor, Nightforce ATACR, Schmidt & Bender PMII) dominate the high-end market.
FFP vs SFP
First Focal Plane: reticle scales with magnification, so MIL/MOA subtensions are correct at any zoom level. Critical for ranging and holdovers. Second Focal Plane reticles stay the same size — fine for fixed-zoom hunting, problematic for precision.
MIL vs MOA
MIL (milliradian): 1 MIL = 3.6" at 100 yards. Used by military and most competition shooters. MOA (minute of angle): 1 MOA = 1.047" at 100 yards. More intuitive for some American shooters. Pick one and master it — don't mix.
Turrets and zero stop
Exposed turrets for fast adjustments; zero stop lets you dial elevation and return to zero by feel. Tracking quality is the #1 differentiator between $1000 and $3500 scopes — a scope that doesn't track repeatedly is useless.
- 5-25x FFP is the precision-rifle standard magnification.
- MIL is the dominant reticle/turret system in competition.
- Zero-stop turrets are essential for fast elevation returns.
- Tracking quality separates great scopes from good ones.
FAQ (1)
- Can I use an MOA scope with a MIL rangefinder?
- Technically yes, but you'll have to convert between systems for every shot. Stick with one system — pick whichever feels intuitive.
Bipods & Support
Atlas, Harris, MDT Ckye-Pod — the foundation under the foundation.
A precision rifle needs stable support. Bipods, tripods, bags, and bipod attachments turn a shaky shooter-on-ground into a consistent firing platform.
Bipods
Atlas BT10 — the gold standard, 5-position legs, pan/cant. Harris 1A2/S-LM — cheaper, lighter, less precise. MDT Ckye-Pod — burly, expensive, panhandle-adjustment. Pick by weight budget and use.
Tripods
Two-Vets, RRS (Really Right Stuff), Manfrotto. Used for shooting from awkward positions in PRS competition. RRS TVC-33 + Anvil-30 ARCA head is the premium standard.
Rear bags
A small rear bag under the buttstock fine-tunes elevation. Wiebad, Armageddon Gear, Cole-TAC. Squeeze the bag to drop the muzzle, release to raise it. Essential for long shots.
- Atlas BT10 is the gold-standard bipod.
- RRS tripods enable awkward-position PRS shooting.
- Rear bags fine-tune elevation — squeeze and release.
FAQ (1)
- Why not just use a sandbag?
- Sandbags work for benchrest. For field/positional shooting, a bipod is faster to deploy and works on uneven terrain.
Ammunition & Reloading
Match ammo, premium brass, and the precision reloading workflow.
Precision rifle accuracy is impossible without precision ammunition. Factory match ammo (Hornady ELD, Federal Gold Medal, Berger) gets you to ~0.5 MOA. Handloading gets you below that.
Factory match ammo
Hornady ELD Match (most popular), Federal Gold Medal Berger, Lapua Scenar. ~$2-3/round. Consistent enough for sub-0.5 MOA in most quality rifles. Test multiple brands — your rifle will prefer one over the others.
Handloading basics
Lapua brass, Berger or Hornady ELD bullets, Hodgdon H4350 or Reloder 16 powder, Federal 210M primers. Consistent neck tension and seating depth matter more than 'hot' loads. Aim for 0.3-0.4 MOA average groups.
Brass care
Quality brass (Lapua, Norma, Peterson) lasts 8-15 reloads. After each firing: anneal the neck, full-length size or neck size, trim to length, deburr. The brass quality determines load consistency.
- Hornady ELD Match is the most-popular factory match load.
- Handloading squeezes more accuracy than factory ammo.
- Lapua brass is the precision-shooting standard.
- Consistent neck tension > 'hot' loads.
FAQ (1)
- Do I need to reload?
- No — modern factory match ammo is good enough for most shooting. Reload if you want the last 0.1-0.2 MOA, want to shoot wildcat calibers, or shoot enough volume to justify the upfront equipment investment.