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Rifles, Reloading, Optics, Equipment
Reloading
Ejector Marks on Fairly Moderate .338 Wildcat Load
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<blockquote data-quote="Noobie" data-source="post: 2892198" data-attributes="member: 127485"><p>Been trying to work up some loads for a wildcat .338 WM variant - larger case capacity. Tried a lot of different powders w/CCI mag primers. The deal is this - the primers aren't really showing much distress except a little roughness near the ejector hole. The ejector hole is rather large and the case head wants to extrude into it. Backed off until the extrusion marks are pretty much cosmetic, same primer roughness. </p><p>The barrel is a custom ultra match grade stainless from a very respectable maker, and they installed/headspaced it into an X-bolt. I sent them a brand new reamer. Note that the cases show no signs of stretching near the base so I doubt headspace is the culprit. Velocities have very low spread.</p><p>So one of my theories is that the chamber is so smooth and glassy that the case just doesn't have any friction to keep it from setting back against the bolt. </p><p>The other theory is that I switched to a wax case lube from the RCBS oil type lube, and the wax is obstinately clinging to the cases/chamber walls or is much better at lubricating things.</p></blockquote><p></p>
[QUOTE="Noobie, post: 2892198, member: 127485"] Been trying to work up some loads for a wildcat .338 WM variant - larger case capacity. Tried a lot of different powders w/CCI mag primers. The deal is this - the primers aren't really showing much distress except a little roughness near the ejector hole. The ejector hole is rather large and the case head wants to extrude into it. Backed off until the extrusion marks are pretty much cosmetic, same primer roughness. The barrel is a custom ultra match grade stainless from a very respectable maker, and they installed/headspaced it into an X-bolt. I sent them a brand new reamer. Note that the cases show no signs of stretching near the base so I doubt headspace is the culprit. Velocities have very low spread. So one of my theories is that the chamber is so smooth and glassy that the case just doesn't have any friction to keep it from setting back against the bolt. The other theory is that I switched to a wax case lube from the RCBS oil type lube, and the wax is obstinately clinging to the cases/chamber walls or is much better at lubricating things. [/QUOTE]
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Ejector Marks on Fairly Moderate .338 Wildcat Load
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