05-18-2011, 08:05 PM
stanc,
Not suggesting 6.5 Swede as a cartridge as I feel it's COAL is too long. I'm just interested since it has performance that I like, and there are existing military 140gr loads for it that can be used as a reference. Since it has a .480" base diameter versus the .476" for 7.62, it would be able to use the same links and provide a theoretical weight comparison. I'm not sure how much the extra 4mm in narrower neck brass will affect the weight between the two cases, but it doesn't matter for what we're looking at. Rough figures show 7.62 147gr weighing 700gr more per 100 rounds of ammo, which is only .1 pound more than the Swede based on bullet weight alone.
This would represent the top limit in weight for a new LMG cartridge, and would penalize the SAW gunners heavily, so I would steer away from it on those grounds as well.
LRRPF52
Not suggesting 6.5 Swede as a cartridge as I feel it's COAL is too long. I'm just interested since it has performance that I like, and there are existing military 140gr loads for it that can be used as a reference. Since it has a .480" base diameter versus the .476" for 7.62, it would be able to use the same links and provide a theoretical weight comparison. I'm not sure how much the extra 4mm in narrower neck brass will affect the weight between the two cases, but it doesn't matter for what we're looking at. Rough figures show 7.62 147gr weighing 700gr more per 100 rounds of ammo, which is only .1 pound more than the Swede based on bullet weight alone.
This would represent the top limit in weight for a new LMG cartridge, and would penalize the SAW gunners heavily, so I would steer away from it on those grounds as well.
LRRPF52