Nothing quite like a custom made Kreiger bbl.
But I have a wife and five boys to support so that is not an option on my AR.[]
Most of the "varmit" bbls I have seen on AR's are in the 20-24 in variety, again with a 1:9 or 1:8 twist.
So if it was your money/gun, what length of bbl do you request?
I can have any length I want, from 16"- 26", but if 20" works well in a 1:9 twist then should I get a full length bbl (26") with a 1:12 twist? or will 22 or 24 inches be just as accurate?
At what point (length of bbl) will velocity start to suffer or errode? Can the bbl be too long?