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Rifles, Reloading, Optics, Equipment
Reloading
Whats the story on flat primers?
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<blockquote data-quote="bikehe" data-source="post: 982602" data-attributes="member: 82066"><p>This is a good question as I recently did some reloads for my 30/30 using federal standard large rifle primers. I loaded 10 with the new hornady 140gr copper bullets, cant remember exactly what they were called. Anyways using the latest ADI load data I was showing slight flattening but interestlngly all loads from min to max had cratering. I thought the new projectiles were causing higher pressures so I did another 10 and ran them over a chrony. The min load was about 150 fps below max velocity and the max load was 50 fps below book data. From this I just assumed the primers were soft and perhaps with a larger firing pin hole helped cratering also. I still dont understand though why it never happened before using federal primers as the only thing Ive done differently is changed projectiles. When these are fired Im going to try some CCI primers</p></blockquote><p></p>
[QUOTE="bikehe, post: 982602, member: 82066"] This is a good question as I recently did some reloads for my 30/30 using federal standard large rifle primers. I loaded 10 with the new hornady 140gr copper bullets, cant remember exactly what they were called. Anyways using the latest ADI load data I was showing slight flattening but interestlngly all loads from min to max had cratering. I thought the new projectiles were causing higher pressures so I did another 10 and ran them over a chrony. The min load was about 150 fps below max velocity and the max load was 50 fps below book data. From this I just assumed the primers were soft and perhaps with a larger firing pin hole helped cratering also. I still dont understand though why it never happened before using federal primers as the only thing Ive done differently is changed projectiles. When these are fired Im going to try some CCI primers [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Whats the story on flat primers?
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