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Rifles, Reloading, Optics, Equipment
Reloading
.338 - 300 RUM pressure problem
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<blockquote data-quote="crittergitter" data-source="post: 602175" data-attributes="member: 8098"><p>As for seating depth, My COAL is 3.930"... give or take a few thousandths. I can't remember exactly off the top of my head. I'm 0.050" off the lands. I get 3216 fps with 107 grains of US869 out of the 34" tube and it shoots .2 MOA groups most of the time. Still, I have had some wacky things happen on 15 or 20 degree days. That's why I tried H1000 to begin with. I may go ahead and try working up from 107 grains with the US869 just to see where excess pressure develops. I may be riding the fence on the undercharged side and getting some detonation issues when the temperature drops a little. My 300 grain load is 105.5 grains of US869 and gives around 3030 fps.</p></blockquote><p></p>
[QUOTE="crittergitter, post: 602175, member: 8098"] As for seating depth, My COAL is 3.930"... give or take a few thousandths. I can't remember exactly off the top of my head. I'm 0.050" off the lands. I get 3216 fps with 107 grains of US869 out of the 34" tube and it shoots .2 MOA groups most of the time. Still, I have had some wacky things happen on 15 or 20 degree days. That's why I tried H1000 to begin with. I may go ahead and try working up from 107 grains with the US869 just to see where excess pressure develops. I may be riding the fence on the undercharged side and getting some detonation issues when the temperature drops a little. My 300 grain load is 105.5 grains of US869 and gives around 3030 fps. [/QUOTE]
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Reloading
.338 - 300 RUM pressure problem
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