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Hunting
Long Range Hunting & Shooting
6.5prc to 7saum conversion?
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<blockquote data-quote="nwmnbowhunter" data-source="post: 2630687" data-attributes="member: 103431"><p>The simple explanation is the sammi specs are too tight. Not enough wiggle room... and so when you reload the brass you get unpredictable pressure increases. </p><p></p><p>I for one blew a primer in a load well under max... not cool. </p><p></p><p>Typically chambers near the web in this case is 0.005 larger than virgin brass at a minimum. Allows the web to expand slightly over multiple reloadings. </p><p></p><p>In the prc case they designed it to only be 0.003 or so difference. I believe it makes factory ammo very accurate, but reloading is a mess because you get these random "clickers" and pressure spikes.</p><p></p><p>Some guys are lucky and got a "sloppy" factory chamber and so they never have problems, but lots of ppl have had problems as evidence by the thread. Referenced.</p></blockquote><p></p>
[QUOTE="nwmnbowhunter, post: 2630687, member: 103431"] The simple explanation is the sammi specs are too tight. Not enough wiggle room... and so when you reload the brass you get unpredictable pressure increases. I for one blew a primer in a load well under max... not cool. Typically chambers near the web in this case is 0.005 larger than virgin brass at a minimum. Allows the web to expand slightly over multiple reloadings. In the prc case they designed it to only be 0.003 or so difference. I believe it makes factory ammo very accurate, but reloading is a mess because you get these random "clickers" and pressure spikes. Some guys are lucky and got a "sloppy" factory chamber and so they never have problems, but lots of ppl have had problems as evidence by the thread. Referenced. [/QUOTE]
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6.5prc to 7saum conversion?
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