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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
extreme speed 7mm stw
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<blockquote data-quote="J E Custom" data-source="post: 473145" data-attributes="member: 2736"><p>Unless you have a 30+'' barrel I would say you have a chronograph issue.</p><p></p><p>A while back I built a stw with a 31.4 " barrel and tried to see how much velocity I could get.</p><p></p><p>With the A Square 140gr loads (Listed at 3500 ft.sec) I got 3590 ft/sec but with hand loads I</p><p>managed 3700 ft/sec with decent accuracy. but when I bumped it close to 3800 ft/sec the </p><p>bullets failed.(Shed there jackets and accuracy was non existent).</p><p></p><p>So if you are not having bullet problems then the chronograph is not correct.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 473145, member: 2736"] Unless you have a 30+'' barrel I would say you have a chronograph issue. A while back I built a stw with a 31.4 " barrel and tried to see how much velocity I could get. With the A Square 140gr loads (Listed at 3500 ft.sec) I got 3590 ft/sec but with hand loads I managed 3700 ft/sec with decent accuracy. but when I bumped it close to 3800 ft/sec the bullets failed.(Shed there jackets and accuracy was non existent). So if you are not having bullet problems then the chronograph is not correct. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
extreme speed 7mm stw
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