Thread: Twist rate relative to barrel length

Originally Posted by PerazziSC3

I have a 1:11 twist which I have just confirmed stabilizes 190 sub-x right down to 630fps. Its factory length maybe 22-24".

My question is will cutting the barrel to 15" change the stabilization? Target speed will remain the same e.g 1000fps.

Would be a shame to cut the barrel for a specific reason, then it doesn't actually do what I cut it down for...

Cheers

No problem, barrel length has very little if any effect on stability Prime example is the ,38/.357 mag S&W barrels are 1:18 3/4" twist they will stabilise
195 grain bullets with barrels 2" to 8 3/4" as long as velocity is fast enough.
If you are stabilised at 630fps it won't change if your shortened barrel maintains that velocity, Pays to work at the upper end of velocity
with sub loads they have very little shock power and need to expand as much as possible.