I have a 243 wssm that i like but its been sitting in the gun safe a long time and ive been thinking about toying with it. What i was wondering is,would a longer barrel add much to that cartridge as far as velocity goes,i have heard that there is some point where the velocity starts to drop off with cartridges like that one ,and simer cartridges,with longer barrels. Dont know if a 30" or 28" would be any faster than the 24" it has on it now.Also can a gunsmith blueprint the a bolt action like say a rem 700?.I think it would be cool to go with a 30" fast twist barrel and a blueprinted action if it would make much of a difference.Mabey it wouldn't I don't know? i might just be piss... into the wind. any info would help a lot on this decission.