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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What makes a cartridge accurate?
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<blockquote data-quote="just country" data-source="post: 1106596" data-attributes="member: 82689"><p>Morning, my 2 cents worth of knowledge. between Joe Gibbs and Roy weatherby</p><p> </p><p>there r volumes of knowledge on the design of the sharpness of a cartridge shoulder</p><p> </p><p>from what I have read, experimented , the sharpness of the shoulder of a cartridge</p><p> </p><p>promotes better combustion. the burn of the powder in the case is delayed by the</p><p> </p><p> sharper shoulder. thus we supposedly get better velocity. another + is the </p><p> </p><p> less case stretch. once fired formed to the chamber the cartridge is butted up </p><p> </p><p>both ends of the chamber. the cartridge has much less stretch. very large charges</p><p> </p><p>of powder can change the cartridge dementions .(sp) the experts say that a AI</p><p> </p><p>cartridge, does not give much increase in velocity. I have not used my chrono. to</p><p> </p><p>disprove this statement. I think the barrel length with the design of the cartridge </p><p> </p><p>design make the difference. I have 223AI,243AI, 6mmAI 257AI, 257 Wbee, </p><p> </p><p>340wbee. all shoot very well. I also have 223,243,6mm,250sav. 308 and more in </p><p> </p><p>standard calibers. I do not have a preference as to which is my favorite. fib I </p><p> </p><p>hedge toward my 223AI. stone cold deadly.</p><p> </p><p>this my 2 cents. very good components and A+gunsmith's r a triple A+++++++</p><p> </p><p>just country</p><p> </p><p>life member NRA and TSRA shoot shoot shoot more fungun)</p></blockquote><p></p>
[QUOTE="just country, post: 1106596, member: 82689"] Morning, my 2 cents worth of knowledge. between Joe Gibbs and Roy weatherby there r volumes of knowledge on the design of the sharpness of a cartridge shoulder from what I have read, experimented , the sharpness of the shoulder of a cartridge promotes better combustion. the burn of the powder in the case is delayed by the sharper shoulder. thus we supposedly get better velocity. another + is the less case stretch. once fired formed to the chamber the cartridge is butted up both ends of the chamber. the cartridge has much less stretch. very large charges of powder can change the cartridge dementions .(sp) the experts say that a AI cartridge, does not give much increase in velocity. I have not used my chrono. to disprove this statement. I think the barrel length with the design of the cartridge design make the difference. I have 223AI,243AI, 6mmAI 257AI, 257 Wbee, 340wbee. all shoot very well. I also have 223,243,6mm,250sav. 308 and more in standard calibers. I do not have a preference as to which is my favorite. fib I hedge toward my 223AI. stone cold deadly. this my 2 cents. very good components and A+gunsmith's r a triple A+++++++ just country life member NRA and TSRA shoot shoot shoot more fungun) [/QUOTE]
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What makes a cartridge accurate?
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