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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
my first re barrel,need some input
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<blockquote data-quote="lynxpilot" data-source="post: 905764" data-attributes="member: 23349"><p>This was my experience. I bought a .308 AR clone that came with a 16" barrel. I was chrono'ing at about 2400 fps and change. I re-barreled to a 24" and had chrono around 2900 fps and change. There are a lot of ballistic calculators out there and if you match the parameters as close as possible, you can see what happens to the round close to terminal so when it gets near subsonic, it's likely to tumble and lose accuracy. I love the .308 round, but 1000 yds is really pushing it. Even at the higher MV's I was getting, the performance at that far out would be severely degraded, I suspect. Shooting for 1000 yds with .308 will demand max MV, so shortening the barrel will make it a lot tougher.</p></blockquote><p></p>
[QUOTE="lynxpilot, post: 905764, member: 23349"] This was my experience. I bought a .308 AR clone that came with a 16" barrel. I was chrono'ing at about 2400 fps and change. I re-barreled to a 24" and had chrono around 2900 fps and change. There are a lot of ballistic calculators out there and if you match the parameters as close as possible, you can see what happens to the round close to terminal so when it gets near subsonic, it's likely to tumble and lose accuracy. I love the .308 round, but 1000 yds is really pushing it. Even at the higher MV's I was getting, the performance at that far out would be severely degraded, I suspect. Shooting for 1000 yds with .308 will demand max MV, so shortening the barrel will make it a lot tougher. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
my first re barrel,need some input
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