twist rate?

[tdoyka]

my 500 linebaugh quest has come to a complete stop in the road. to remind you, it will be a tc encore with a 23" barrel and it will take a 450gr lfn about 1300-1500fps that will kill a deer/black bear out to 100-125 yards. i may try a 500-530gr cast boolit, just for giggles, but it is far off.

the rifle twist is what stops me. will it be either a....

1 in 28" twist that MGM barrels or a 1 in 18" twist that bullberry barrels make?

i'm not a rifle twist guy, i just shoot them. when people start going the greenhill twist........i find something better to do. i'm a big fan of MGM, they do excellent work. i have not tried a bullberry barrel but i suspect they do the same.

so will it be either the MGM or the bullberry? or am i worried about nothing?

[Outpost75]

I shoot 450 grain bullets out of my 28" twist Green Mountain LRH muzzleloader barrel with 80 grains of 2Fg black powder and it works fine. FWIW.

[marlinman93]

Wont be nearly as accurate with the 1:28" as it will with a 1:18" with those big heavy bullets! Especially as you get farther out. Might be OK at 100 yds., but might begin to destabilize even then.

[John Taylor]

Length of bullet has a lot to do with what twist you will need. The original 50 express used a 1 in 56" twist with a 300 grain bullet. When Winchester went to the 50-100-450 the twist was 1 in 36", same brass with less powder and more bullet. Next thing to consider is velocity, if it's low you will need a faster twist. Length of barrel will have a lot to do with velocity and twist rate. A 44-40 pistol might have a 1 in 18" twist but in a rifle it might be 1 in 36".

[str8wal]

If you know the length and BC of the bullet, plug that info into this:

http://www.bergerbullets.com/twist-rate-calculator/