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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
maximum pressure rifle
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<blockquote data-quote="Orange Dust" data-source="post: 1527097" data-attributes="member: 92702"><p>The reason you can SOMETIMES excel listed max with a factory gun is because listed loads are worked up in pressure barrels with minimum dimensions. Factory guns can have loser tolerances and CAN sometimes have lower pressure with a given charge. Whenever you get shiny spots you have already exceeded pressure on the combination of components you are using and have to back off the load at least a grain for the conditions you are shooting. More if you want to shoot in a higher temperature than when working up to load. Hope this makes sense. You should mb ever shoot any load that shows pressure signs, use a bigger gun if you are not where you want to be. A chronograph also indicates pressure. If you are exceeding listed velocity with the same barrel length as the manual, most likely you are also exceeding the listed pressure. There are exceptions, but if it is faster than it is supposed to be, be very careful. You are at the edge.</p></blockquote><p></p>
[QUOTE="Orange Dust, post: 1527097, member: 92702"] The reason you can SOMETIMES excel listed max with a factory gun is because listed loads are worked up in pressure barrels with minimum dimensions. Factory guns can have loser tolerances and CAN sometimes have lower pressure with a given charge. Whenever you get shiny spots you have already exceeded pressure on the combination of components you are using and have to back off the load at least a grain for the conditions you are shooting. More if you want to shoot in a higher temperature than when working up to load. Hope this makes sense. You should mb ever shoot any load that shows pressure signs, use a bigger gun if you are not where you want to be. A chronograph also indicates pressure. If you are exceeding listed velocity with the same barrel length as the manual, most likely you are also exceeding the listed pressure. There are exceptions, but if it is faster than it is supposed to be, be very careful. You are at the edge. [/QUOTE]
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