I have just got a Rem 700 Police Long Range 338 Lapua & I'm going to rebarrel it in Lapua improved. I'm wanting to get some info on appropriate barrel length & twist. I will be shooting 300 SMK & Bergers (when they are fixed ) I was thinking 1-10 & at least 30"+ long. This will be a long range plinking rifle and as such I'm not worried about the weight & want to get max velocity. I have a 338 Edge for hunting with 1-9 & 30 inch barrel, 2850 fps. Cheers Greg.