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Rifles, Reloading, Optics, Equipment
Reloading
Peterson Brass &&^^%$##$%
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<blockquote data-quote="Spotter&#039;s Signature" data-source="post: 2979490" data-attributes="member: 121865"><p>Some already pointed it out: Peterson brass is thicker than many other, so it has lower volume. This can get extreme: in my 7mm WBY, I max out velocities almost 2 full grains of powder <em>lower </em>than listed in official sources.</p><p>Here's an additional problem: it is recommended that in load development involving copper mono bullets (due to "differences in their construction"), you must start <em>actually </em>at the low end of the recommended charge. I frequently pick the mid charge to start, "to save time and resources", haha... I got lucky I maxed out at the very first charge I scanned, which was the middle charge. It could have gone over pressure.</p><p>As to the brass, I'm on 15th reload using 300 WM Long brass (there were some issues with tight primer pockets initially, no problem though), fantastic cases. 7mm WBY MAG... Extremely expensive; high quality and consistent, but I just noticed the first neck split on a 4th reload. It never happened in my 300 WM, but there are many reasons why this can occur.</p><p>As to tight chambering - carbon ring was my issue before; thorough cleaning took care of that. If it's not the rounds, there must be something going on in the chamber.</p></blockquote><p></p>
[QUOTE="Spotter's Signature, post: 2979490, member: 121865"] Some already pointed it out: Peterson brass is thicker than many other, so it has lower volume. This can get extreme: in my 7mm WBY, I max out velocities almost 2 full grains of powder [I]lower [/I]than listed in official sources. Here's an additional problem: it is recommended that in load development involving copper mono bullets (due to "differences in their construction"), you must start [I]actually [/I]at the low end of the recommended charge. I frequently pick the mid charge to start, "to save time and resources", haha... I got lucky I maxed out at the very first charge I scanned, which was the middle charge. It could have gone over pressure. As to the brass, I'm on 15th reload using 300 WM Long brass (there were some issues with tight primer pockets initially, no problem though), fantastic cases. 7mm WBY MAG... Extremely expensive; high quality and consistent, but I just noticed the first neck split on a 4th reload. It never happened in my 300 WM, but there are many reasons why this can occur. As to tight chambering - carbon ring was my issue before; thorough cleaning took care of that. If it's not the rounds, there must be something going on in the chamber. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Peterson Brass &&^^%$##$%
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