twist rate of a remington sportsman 78 30-06

The longer the bullet, the faster the twist needs to be to stabilize it.īullets made of materials with less specific gravity than lead (less mass per given area,) such as copper or gilding metal, need to be longer for a given weight. A single barrel twist rate can’t stabilize them all. Same caliber bullets come in a wide variety of weights/lengths. 22-250 Rem., the 12-inch twist rate usually stabilizes lead-core bullets from 40 grains to 55 grains, sometimes 60 grains. 30-06, while a 220-grain boat-tail spire point would be too long to stabilize. A 220-grain, lead flat-nosed bullet might stabilize in a 10-inch twist.

Length is the big factor here rather than weight. A safer upper end (long bullet) is 200 grains. These are adequate to stabilize bullets as light (short) as 100 grains and as heavy (long) as 200 grains, sometimes 220 grains. 30-06 barrels have a 10-inch or 12-inch twist. With other cartridges, a smaller variety of bullet weights/lengths are stabilized. 30-06, accommodate an amazing number of bullet weights/lengths. Select manufacturers may change these slightly, but rarely radically. Manufacturers build barrels with appropriate twist rates to match based on industry standards. 30-06 will stabilize all these 308 caliber bullets, which run from 100- to 165-grains, but a 220-grain one would probably require an 8-inch twist barrel to stabilize.įortunately for us, engineers have figured out optimum twist rates for standard cartridges using typical bullet weights. The standard 10- or 12-inch twist barrel of a. Bryan Oliver – Quick Hits, Videos, Memes.Babe Winkleman – Good Fishing / Outdoor Secrets.Eddie Claypool – Blue Collar Bowhunting.

Twist rate of a remington sportsman 78 30-06