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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Why do some barrels create higher velocity than others
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<blockquote data-quote="J E Custom" data-source="post: 1520064" data-attributes="member: 2736"><p>Bore finish can only account for around 50 FT/SEC from rough to smooth. In fact you can get to smooth and lose velocity. The bore needs to be finished with a brush/honed surface to seal and not drag on the bullet. Don,t get me wrong, finish is important but not worth 200 ft/sec unless the slow barrel is realy bad. I have a realy bad barrel that you would have to see to believe, and I will show pictures as soon as i mill the barrel open for pictures and it was about 200 ft/sec slower but there is a lot more wrong with it than a poor finish. (More to come when I get the pictures).</p><p></p><p>Barrel finish has more to do with how fast a barrel will brake in and reach its maximum velocity with a particular load. One of the slowest (good)barrels i have seen had the Black Star treatment (polished so much it Looks like chrome Plating).</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1520064, member: 2736"] Bore finish can only account for around 50 FT/SEC from rough to smooth. In fact you can get to smooth and lose velocity. The bore needs to be finished with a brush/honed surface to seal and not drag on the bullet. Don,t get me wrong, finish is important but not worth 200 ft/sec unless the slow barrel is realy bad. I have a realy bad barrel that you would have to see to believe, and I will show pictures as soon as i mill the barrel open for pictures and it was about 200 ft/sec slower but there is a lot more wrong with it than a poor finish. (More to come when I get the pictures). Barrel finish has more to do with how fast a barrel will brake in and reach its maximum velocity with a particular load. One of the slowest (good)barrels i have seen had the Black Star treatment (polished so much it Looks like chrome Plating). J E CUSTOM [/QUOTE]
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Why do some barrels create higher velocity than others
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