Stan. I’d focus real hard on reloading techniques. Going transonic isn’t a big deal unless you have stability issues. At that point the bullet can start tumbling then you’re done. Focus on bullet run out. Consistent neck tension. That’ll be the deal breaker in your set up
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20 in vs 26 inch barrel 308
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Originally posted by howabouttheiris View PostThe bullet will not start to slow in the barrel until the bullet velocity approaches the gas outflow velocity.
Longer barrels will make the round go faster. (by less for every inch, but still faster)
[ame="https://www.youtube.com/watch?v=XCqa2umL8ME"]Cutting The World's Longest Rifle To Find The Perfect Barrel Length - YouTube[/ame]
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Originally posted by howabouttheiris View PostThe bullet will not start to slow in the barrel until the bullet velocity approaches the gas outflow velocity.
Longer barrels will make the round go faster. (by less for every inch, but still faster)
Using my 6.5 data that I have in the GRT software and playing with the barrel length, a 20" barrel is slower than a 30" barrel is slower than a 40" barrel... and this continues until you get to something that is not practical to be manufactured.
For f/tr, the max length is dictated by the weight limit for the rifle.
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Originally posted by Drycreek3189 View PostSo…..a metallic cartridge is like a rocket ? A computer model won’t convince me. Rebarrel a rifle with a 40” barrel and start cutting and chronographing. That will convince me.
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