338 Lap Imp barrel length ??

[Erik Kiser]

My new build has enough barrel to go out to 31.5" which has been my intention from the start but I'm wondering from those with experience, how much velocity would I lose if I cut it back to 30". Plan on shooting 300 Berger's with RL33 if it'll work out. Rifle will be single shot so bullets are gonna be seated long

 

[Edd]

Based on this info, looks like about 60-70 FPS. It also looks like Lapua's choice of 27" may have been a good one.

Lilja Precision Rifle Barrels - Articles: Barrel Lenghts and Velocities in the 338/378 Weatherby Magnum

 

[Erik Kiser]

Great link, thank you