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Rifles, Reloading, Optics, Equipment
Reloading
lose primer pockets, why?
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<blockquote data-quote="Darkker" data-source="post: 1179227" data-attributes="member: 81406"><p>So here is the thing, Pressure behind the bullet is what creates velocity. Velocity isn't free, and doesn't magically appear because we want it to; although that would be great.</p><p>Anyway. The 260 tops out(Pressure wise) with a 140gr bullet at about 2680-ish with that powder, and about 2 grains under your load. So, if you go faster, it's because of increased pressure. Without a PT, we can't see what's happening in your rifle. I can tell you from Tracing the Creedmoor and 308 that to gain 100fps, you are going to need an additional 10-15,000psi.</p><p></p><p>Now there could be a brass issue, but most brass excepting *** Federal; in modern rifles begins to show "signs" and stretch when you are in the 72,000+ psi range.</p></blockquote><p></p>
[QUOTE="Darkker, post: 1179227, member: 81406"] So here is the thing, Pressure behind the bullet is what creates velocity. Velocity isn't free, and doesn't magically appear because we want it to; although that would be great. Anyway. The 260 tops out(Pressure wise) with a 140gr bullet at about 2680-ish with that powder, and about 2 grains under your load. So, if you go faster, it's because of increased pressure. Without a PT, we can't see what's happening in your rifle. I can tell you from Tracing the Creedmoor and 308 that to gain 100fps, you are going to need an additional 10-15,000psi. Now there could be a brass issue, but most brass excepting *** Federal; in modern rifles begins to show "signs" and stretch when you are in the 72,000+ psi range. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
lose primer pockets, why?
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