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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Always learning something new
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<blockquote data-quote="Mikecr" data-source="post: 1158015" data-attributes="member: 1521"><p>I find it hard to believe that MV would decrease even if the barrel were 40 feet long.</p><p>For one, there is always plenty of pressure behind a bullet, that has been fully engraved, leaving high spots of jacket behind, and having less obturation(less friction) with travel and as pressure drops.</p><p></p><p>I believe velocity gains from 2ft to 4ft would be way bigger than gains from 20ft to 40ft, but that there would still be gains (never loss).</p><p>You know there are some who believe that bullets continue to accelerate after muzzle release...</p><p>Probably find that in some old fart article out there.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1158015, member: 1521"] I find it hard to believe that MV would decrease even if the barrel were 40 feet long. For one, there is always plenty of pressure behind a bullet, that has been fully engraved, leaving high spots of jacket behind, and having less obturation(less friction) with travel and as pressure drops. I believe velocity gains from 2ft to 4ft would be way bigger than gains from 20ft to 40ft, but that there would still be gains (never loss). You know there are some who believe that bullets continue to accelerate after muzzle release... Probably find that in some old fart article out there. [/QUOTE]
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