Barrel twist. I know a someone explained this to me but I forgot.
 

Okay, so I remember someone telling me that a slower barrel twist meant I could stabilize a heavier bullet. If I have a .22-250 barrel, at a twist of 1 in 12. Can I push 60+ grain bullets through this thing? Or will I have to stick at 55 gr and below? From what I've seen out there the quicker barrel twists on ARs are the ones that can stabilize the heavier bullets.

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

The latter is true...faster twist for heavier bullets

For 22-250, 1:12-1:14" twist generally stabilzes .224 bullets in the 40gr to ~60gr range.

For .223, 1:12 twist for 45-60gr, 1:9 twist for 50gr to ~70gr, 1:7" to 1:8" twist stabilizes 55gr to 80gr--and even 100gr loads (being developed).

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

Hey Silver City,

Where can I find out about 1 in 10 Savage 308. It there a chart somewhere?

Just trying to cut some time out of the trial and error method.

E-A

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

308 runs 1:10 or 1:12. Generally speaking most bullet weights should shoot okay in either twist, but the 1:10 should shoot heavier bullet weights 150-200gr a bit better, and the 1:12 twist 110-165gr. YMMV.

My choice for optimum accuracy in a 1:10 barrel? Try Federal 168 or 175 Match...or handloads with the same Sierra bullets and IMR3031 or IMR4895 powder.

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

An easy way to envision what is going on with twist and bullets is to consider bullets to be tops. A very short fat top can be stabilized with very little twist but you're going to have to spin the devil out of a long and thin top to keep it up.

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

Thanks fellas, I got it in my head somehow that spinning a heavy bullet really fast like 1:8" would just have the jacket fly off and things like that.

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

And don't forget the speed factor. Heavy and slow can stabilize in a fast and light twist barrel....for the casters out there....

Re: Barrel twist. I know a someone explained this to me but I forgot.
 

That has happened but only with very lightly constructed varmint bullets in rapid twist barrels pushed fast. How about a 22-250 at 3750 fps in an 8 twist, that is 337,500 RPM, that'll blow a Chevvy up!

Seriously, if you don't shoot bullets so lightly constructed that they will expand in a prairie dog, it isn't an issue.