Cartridge profile · Introduced 1963

.300 Winchester Mag

Long-range elk and moose cartridge; also used on big bears and plains game.

Good for: Elk/moose, Big/dangerous

A typical factory load is a 180 gr soft point bullet at about 2,960 ft/s, with roughly 3,502 ft-lbs of energy at the muzzle.

Typical load
180 grsoft point
Muzzle speed
2,960 ft/s
Muzzle energy
3,502 ft-lbs
Typical BC (G1)
≈ 0.40typical, varies by brand
Twist rate
1:101:9 for 200+ gr
Practical range
500+ yd
Point-blank range
286 yd6" vital zone
Recommended platform
Heavy rifle, 8½–9 lb+Heavy recoil; skip ultralights, consider a brake

On the Hunting Rifle Cartridges chart

Made to hunt
Long-range elk and moose cartridge; also used on big bears and plains game.Elk/moose · Big/dangerous
Typical load
180 grsoft point
Typical muzzle fps
2,960ft/s
Typical muzzle energy
3,502ft-lbs
Typical BC (G1)
≈ 0.40typical, varies by brand
Twist rate for typical load
1:101:9 for 200+ gr
Effective ethical range
500+ yd
MPBR
286 yd6" vital zone · Near zero 26 yd · Far zero 244 yd · Min PBR 0 yd · Max PBR 286 yd · Sight-in @100 2.63" high
Recommended platform
Heavy rifle, 8½–9 lb+Heavy recoil; skip ultralights, consider a brake

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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.

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