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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Build advice for a modern safari rifle
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<blockquote data-quote="Grumulkin" data-source="post: 737653" data-attributes="member: 29281"><p>The primer is not "cratered" and looks to have been shot in a low pressure load to me. Also, the soot on the case means low pressure to me. If you want added confirmation, look down the barrel after you shoot; if there is a lot of powder residue in the bore that is added confirmation of a low pressure load. Also, if you were shooting an excessively high pressure load, you would probably be getting a sticky bolt lift and scuffing of the head of the case from the bolt.</p><p></p><p>You seem preoccupied with Berger's data and with powder burn rate. You can have several powders with very similar burn rates and have one that will shoot better than the others. You also could use data from other bullet purveyors for 175 to 180 gr. jacketed lead core bullets with your Berger bullets.</p><p></p><p>As for "maximum" charges, take a look at different reloading manuals and cartridges. I've found instances where a maximum charge in one manual was about the starting charge in another. That is because chambers, barrels, throats, free bore, powder lots, cases and primer lots varied among the various testers. Thus, a maximum charge in a manual may not be the maximum charge for your gun and components.</p></blockquote><p></p>
[QUOTE="Grumulkin, post: 737653, member: 29281"] The primer is not "cratered" and looks to have been shot in a low pressure load to me. Also, the soot on the case means low pressure to me. If you want added confirmation, look down the barrel after you shoot; if there is a lot of powder residue in the bore that is added confirmation of a low pressure load. Also, if you were shooting an excessively high pressure load, you would probably be getting a sticky bolt lift and scuffing of the head of the case from the bolt. You seem preoccupied with Berger's data and with powder burn rate. You can have several powders with very similar burn rates and have one that will shoot better than the others. You also could use data from other bullet purveyors for 175 to 180 gr. jacketed lead core bullets with your Berger bullets. As for "maximum" charges, take a look at different reloading manuals and cartridges. I've found instances where a maximum charge in one manual was about the starting charge in another. That is because chambers, barrels, throats, free bore, powder lots, cases and primer lots varied among the various testers. Thus, a maximum charge in a manual may not be the maximum charge for your gun and components. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Build advice for a modern safari rifle
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