Cartridge profile · AR-10

.338 Federal

.308 necked up to .338 for elk, moose and bear from an AR-10.

Good for: AR-10, Deer/hog

A typical factory load is a 200 gr soft point bullet at about 2,630 ft/s, with roughly 3,071 ft-lbs of energy at the muzzle.

Typical load

200 grsoft point · 22" barrel

Muzzle speed

2,630 ft/s

Muzzle energy

3,071 ft-lbs

Typical BC (G1)

≈ 0.40typical, varies by brand

Twist rate

1:10

Practical range

250 yd

On the AR Caliber Guide chart

Made for

.308 necked up to .338 for elk, moose and bear from an AR-10.AR-10 · Deer/hog

Typical load

200 grsoft point · 22" barrel

Typical muzzle fps

2,630ft/s

Typical muzzle energy

3,071ft-lbs

Typical BC (G1)

≈ 0.40typical, varies by brand

Twist rate for typical load

1:10

Practical range

250 yd

What to change

Barrel: Change · Bolt: Keep · Standard · Magazine: Keep · Standard .308

Open the full AR Caliber Guide chart →

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Speed, energy and BC are typical figures for the listed load; real numbers vary by brand, lot and barrel length. Always check the ammo maker's data for your exact load.