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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM- early pressure signs?
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<blockquote data-quote="Big_Tex22" data-source="post: 1039183" data-attributes="member: 4699"><p>Update on my pressure testing, after my first string showed early pressure I remeasured everything, and I had them .010" into the lands. I'm glad I started with light powder charges to help protect my mistakes in measuring. I know .01 into the lands is probably not a big deal with the bergers, but I set the rest of my string exactly touching the lands, and had no pressure all way up to 95 grains of retumbo! No tight bolt or ejector pin marks at all, got up to 3224 fps. So I guess I'll go with the same charges and start my first "ladder test." </p><p></p><p>I did have what I guess you would call a firing pin "crater" of some sort, not much but a little, but I had that in my light charges as well. Could it just be a characteristic of the firing pin since there was no other pressure signals? The primer didn't look necessarily flattened at all.</p><p></p><p>Thanks for the education.</p></blockquote><p></p>
[QUOTE="Big_Tex22, post: 1039183, member: 4699"] Update on my pressure testing, after my first string showed early pressure I remeasured everything, and I had them .010" into the lands. I'm glad I started with light powder charges to help protect my mistakes in measuring. I know .01 into the lands is probably not a big deal with the bergers, but I set the rest of my string exactly touching the lands, and had no pressure all way up to 95 grains of retumbo! No tight bolt or ejector pin marks at all, got up to 3224 fps. So I guess I'll go with the same charges and start my first "ladder test." I did have what I guess you would call a firing pin "crater" of some sort, not much but a little, but I had that in my light charges as well. Could it just be a characteristic of the firing pin since there was no other pressure signals? The primer didn't look necessarily flattened at all. Thanks for the education. [/QUOTE]
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300 RUM- early pressure signs?
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