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Old December 21, 2019, 01:09 PM   #13
Bartholomew Roberts
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Join Date: June 12, 2000
Location: Texas and Oklahoma area
Posts: 8,339
More info on the civilian cartridge... 80,000 PSI!

Quote:
This added pressure will drive a 135-grain bullet from SIG’s Hybrid Match cartridge 3,000 fps from a 16-inch barrel, and produce 2,694 ft.-lbs. of energy. The 135-grain bullet has a respectable .488 G1 BC.

SIG’s 277 Fury Hybrid Hunting load features a 140-grain bullet with a .508 G1 BC, launching from a 16-inch barrel at 2,950 fps. That one produces 2,706 ft.-lbs. of muzzle energy, too.
https://www.tactical-life.com/gear/a...d-case-design/
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