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Rifles, Reloading, Optics, Equipment
Reloading
New Load Is Inconsistent
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<blockquote data-quote="Shooter Fred" data-source="post: 537485" data-attributes="member: 31648"><p>I recently loaded up a test batch for my 300 RUM...I shot 5 shots with 5 different loads...the best load was the hottest, which at the time only showed minor signs of pressure (a slightly flattened primer and ejector mark).</p><p> </p><p>I reloaded the exact same load and went to the range this AM and I could not get the groups tight for the life of me...also the pressure seemed to be a bit higher as I had one case crack at the end the bullet goes in (1 out of 50 that I shot).</p><p> </p><p>Just so you know, I calibrated my scale prior to measuring the loads and I was very cautious to make sure the exact amount of powder was in each case. I made sure to drop the powder the same way into each case as well. I seated every bullet to the exact ogive measurement of 2.970. Every primer was seated carefully and correctly.</p><p> </p><p>The only thing that was different today is it was about 5-10 degrees warmer, more humid and a slight breeze (5-10mph). I was shooting at a range of 100 yards. My best group of 5 would be two almost touching then the other three around 2 or so inches away in multiple directions.</p><p> </p><p>I was wondering if anyone has any suggestions on where to go from here...I obviously need to back off the powder a bit but I am not sure what to do at all. Any suggestions would be appreciated.</p><p> </p><p>Just so you know, it was not me shooting poorly as i was able to get a few loads someone else made up for me to group well (they are target not hunting loads).</p><p> </p><p>Thanks,</p><p>Fred</p></blockquote><p></p>
[QUOTE="Shooter Fred, post: 537485, member: 31648"] I recently loaded up a test batch for my 300 RUM...I shot 5 shots with 5 different loads...the best load was the hottest, which at the time only showed minor signs of pressure (a slightly flattened primer and ejector mark). I reloaded the exact same load and went to the range this AM and I could not get the groups tight for the life of me...also the pressure seemed to be a bit higher as I had one case crack at the end the bullet goes in (1 out of 50 that I shot). Just so you know, I calibrated my scale prior to measuring the loads and I was very cautious to make sure the exact amount of powder was in each case. I made sure to drop the powder the same way into each case as well. I seated every bullet to the exact ogive measurement of 2.970. Every primer was seated carefully and correctly. The only thing that was different today is it was about 5-10 degrees warmer, more humid and a slight breeze (5-10mph). I was shooting at a range of 100 yards. My best group of 5 would be two almost touching then the other three around 2 or so inches away in multiple directions. I was wondering if anyone has any suggestions on where to go from here...I obviously need to back off the powder a bit but I am not sure what to do at all. Any suggestions would be appreciated. Just so you know, it was not me shooting poorly as i was able to get a few loads someone else made up for me to group well (they are target not hunting loads). Thanks, Fred [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New Load Is Inconsistent
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