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Rifles, Reloading, Optics, Equipment
Reloading
Pressure and case length
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<blockquote data-quote="rscott5028" data-source="post: 684443" data-attributes="member: 24624"><p>Cartridge and case length are entirely different. </p><p> </p><p>The case is just the brass container. If it's too long, it may jam at the end of your chamber and pinch the bullet causing a pressure spike. </p><p>If the case is slightly shorter than the "trim-to" length in your reloading manual, then no big deal. </p><p> </p><p>The cartridge overall length COAL is from case head to bullet tip. A cartridge with the bullet jammed into the rifling will likely have higher pressure than the same load with the bullet jumped to the lands. </p><p> </p><p>If your AR bolt isn't cycling far enough, you may need a heavier charge. I'm sure there's some tuning you could do with your rifle if you're dead set on this load. </p><p> </p><p>Do you have this problem with factory ammo? </p><p> </p><p>This is also a common issue with semi-auto pistols that are held too loosely. But, not so much with a shoulder fired weapon. </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 684443, member: 24624"] Cartridge and case length are entirely different. The case is just the brass container. If it's too long, it may jam at the end of your chamber and pinch the bullet causing a pressure spike. If the case is slightly shorter than the "trim-to" length in your reloading manual, then no big deal. The cartridge overall length COAL is from case head to bullet tip. A cartridge with the bullet jammed into the rifling will likely have higher pressure than the same load with the bullet jumped to the lands. If your AR bolt isn't cycling far enough, you may need a heavier charge. I'm sure there's some tuning you could do with your rifle if you're dead set on this load. Do you have this problem with factory ammo? This is also a common issue with semi-auto pistols that are held too loosely. But, not so much with a shoulder fired weapon. -- richard [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Pressure and case length
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