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6/17/2025, 1:50:00 AM
>>63848868
By the way, this is what you’re talking about. I modeled a 338 lapua necked to .264 in an internal ballistics computer and raised the pressure until I hit 3300fps with a 200gr bullet from a 20” barrel. A 200gr .264 doesn’t exist btw, and with normal bullet material densities, would require an L:D of 7.3:1. This is all just absurd. Your cartridge would have greater sectional energy than a 50BMG. Thus the appropriate barrel length is even longer than that of 50BMG, and barrel life even shorter.
By the way, this is what you’re talking about. I modeled a 338 lapua necked to .264 in an internal ballistics computer and raised the pressure until I hit 3300fps with a 200gr bullet from a 20” barrel. A 200gr .264 doesn’t exist btw, and with normal bullet material densities, would require an L:D of 7.3:1. This is all just absurd. Your cartridge would have greater sectional energy than a 50BMG. Thus the appropriate barrel length is even longer than that of 50BMG, and barrel life even shorter.
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