hildo
Member
I have been looking around a bit on twist rates in barrels, and it is not very clear to me.
A 1:48 twist, this means a 1 turn of the bullet (360 degree) on 48 inch barrel length. Is this correct?
Also noticed that on BP guns twist rates seeme to be slower. I saw on nitro rifles people talk on 1:7 twist rate, with .223 bullets, which seemes extremely quick.
Why the twist difference between BP and nitro guns?
Also have read that basically how heavier the bullet, the faster the twist rate should be. This messes up the statement above with the 1:7 twist rate on that small .223 bullet.
This seemes unlogical since when a large bullet is spinning it will keep rotating longer than a light bullet.
Then there seemes to be a difference between a round ball and an elongated bullet and howabout patches? Underspinning and over spinning seemes to give a bad accuracy. How fast a bullet spins obviously also has something to do with what speed it travels down the barrel too. How can one determin the right spin rate with a certain bullet at a certain speed?
The more I read the more unclear it becomes. Think I'm missing the basic point somewhere on how it works.
Can someone help me to get some clarity on these mysterious twist rates?
A 1:48 twist, this means a 1 turn of the bullet (360 degree) on 48 inch barrel length. Is this correct?
Also noticed that on BP guns twist rates seeme to be slower. I saw on nitro rifles people talk on 1:7 twist rate, with .223 bullets, which seemes extremely quick.
Why the twist difference between BP and nitro guns?
Also have read that basically how heavier the bullet, the faster the twist rate should be. This messes up the statement above with the 1:7 twist rate on that small .223 bullet.
This seemes unlogical since when a large bullet is spinning it will keep rotating longer than a light bullet.
Then there seemes to be a difference between a round ball and an elongated bullet and howabout patches? Underspinning and over spinning seemes to give a bad accuracy. How fast a bullet spins obviously also has something to do with what speed it travels down the barrel too. How can one determin the right spin rate with a certain bullet at a certain speed?
The more I read the more unclear it becomes. Think I'm missing the basic point somewhere on how it works.
Can someone help me to get some clarity on these mysterious twist rates?