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Rifles, Reloading, Optics, Equipment
Reloading
Too much pressure in the 300 RUM?
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<blockquote data-quote="Mysticplayer" data-source="post: 67090" data-attributes="member: 8947"><p>The other 'best' way to monitor pressure is with a chrony. If the velocities are within reason, odds are pressures are too. If you are way above (say over 5%), you can bet pressures are toasty.</p><p></p><p>With regards to primer pocket life, if your pockets get loose in under 4 reloads, your loads are very toasty. That is where I was running my RUM. Dropped loads a bunch and now am on my 7th reload with no issue. Primers looked the same after firing so don't really pay much attention to that anymore.</p><p></p><p>I also neck size so bolt lift will get harder all on its own. Again not that accurate of an indicator unless you need to hammer it open, then...</p><p></p><p>I shoot in BC so know all about the cold weather. Nice thing you are using Retumbo. It should not vary much when temps go up to +30C. Always start low and verify but I have shot the same loads in some very hot weather with little change either in POI or accuracy.</p><p></p><p>Enjoy...</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 67090, member: 8947"] The other 'best' way to monitor pressure is with a chrony. If the velocities are within reason, odds are pressures are too. If you are way above (say over 5%), you can bet pressures are toasty. With regards to primer pocket life, if your pockets get loose in under 4 reloads, your loads are very toasty. That is where I was running my RUM. Dropped loads a bunch and now am on my 7th reload with no issue. Primers looked the same after firing so don't really pay much attention to that anymore. I also neck size so bolt lift will get harder all on its own. Again not that accurate of an indicator unless you need to hammer it open, then... I shoot in BC so know all about the cold weather. Nice thing you are using Retumbo. It should not vary much when temps go up to +30C. Always start low and verify but I have shot the same loads in some very hot weather with little change either in POI or accuracy. Enjoy... Jerry [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Too much pressure in the 300 RUM?
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