05-20-2011, 12:04 AM
stanc,
Thanks for that. I just requested some sourcing for those Swedish Military 140's via contacts in Finland. That's a pretty popular cartridge over there, and Europe as a whole of course. I'm looking at the 6mm BR, which has a water capacity of around 38-39.5grains. I'm thinking a more ideal cartridge for what we're looking at would have a narrower base diameter like the Grendel at .444", with more cartridge length for powder capacity, and would give a better over-bore relationship for barrel life if used with a .264" bore. Basically, a longer base-to-shoulder Grendel would seem ideal at this point, given that we aren't limited by mag-length. If closer to 40 grains of powder could be used, that would get the 6.5's going much faster.
The .260 is way too spacious in case capacity for long bullets at least, and a slightly-narrower case would help with barrel life as mentioned, in addition to soldier carrying capacity for space.
LRRPF52
Thanks for that. I just requested some sourcing for those Swedish Military 140's via contacts in Finland. That's a pretty popular cartridge over there, and Europe as a whole of course. I'm looking at the 6mm BR, which has a water capacity of around 38-39.5grains. I'm thinking a more ideal cartridge for what we're looking at would have a narrower base diameter like the Grendel at .444", with more cartridge length for powder capacity, and would give a better over-bore relationship for barrel life if used with a .264" bore. Basically, a longer base-to-shoulder Grendel would seem ideal at this point, given that we aren't limited by mag-length. If closer to 40 grains of powder could be used, that would get the 6.5's going much faster.
The .260 is way too spacious in case capacity for long bullets at least, and a slightly-narrower case would help with barrel life as mentioned, in addition to soldier carrying capacity for space.
LRRPF52