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Rifles, Reloading, Optics, Equipment
Reloading
Powder lot to lot variation
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<blockquote data-quote="Gregg C" data-source="post: 1602584" data-attributes="member: 103471"><p>With the old lot heavy bolt lift was at 106.4grs . I backed off to 105.0 and loaded 25 rounds at different CBTO lengths and fired them all. No problems, but that eas the last of that bottle. Cracked open another bottle, loaded up another 25 for additional tuning at the same load. I thought that 1.5grs off max would be ok. About 1.5 per cent, but I didn't think of it like that. Flattened primers and hard bolt lift convinced me to stop. Pulled the bullets, resized (FL this time ) and put back 104. Shot them today, went beautifully. Similar velocities. And settled on my seating depth. Buutt....</p></blockquote><p></p>
[QUOTE="Gregg C, post: 1602584, member: 103471"] With the old lot heavy bolt lift was at 106.4grs . I backed off to 105.0 and loaded 25 rounds at different CBTO lengths and fired them all. No problems, but that eas the last of that bottle. Cracked open another bottle, loaded up another 25 for additional tuning at the same load. I thought that 1.5grs off max would be ok. About 1.5 per cent, but I didn't think of it like that. Flattened primers and hard bolt lift convinced me to stop. Pulled the bullets, resized (FL this time ) and put back 104. Shot them today, went beautifully. Similar velocities. And settled on my seating depth. Buutt.... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Powder lot to lot variation
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