Hi all, I have just bought a gain twist Bartlein 6mm barrel - 1 in 8.5 to 1 in 8 which is going to be chambered for 6BR. Does anyone actually know if a gain twist barrel has anything over a normal twist barrel? (Going to use the Berger 105gr VLD). Or is it just a 'fad' and there is no real measurable benefit.
Thanks
Thanks