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Rifles, Reloading, Optics, Equipment
Reloading
300 prc load development
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<blockquote data-quote="OutsideSeth" data-source="post: 1945578" data-attributes="member: 113338"><p>A chrono would help you validate if this is indeed the issue. It sounds like you tested at both 100 and 600 yds. At 100 yds it would be very difficult to tell the difference between charges in a magnum cartridge they are going to be so close together at that range. At 600 yds you should be seeing a difference.</p><p></p><p>There are a lot of things I don't know about the load you are working up, but if it were me and there were no pressure signs and I was happy with the velocity; I would choose the charge where the plateau starts and go with that. If I wasn't happy with the velocity then I would choose a faster powder with mfg published load data for 300 PRC and work up with a faster powder.</p><p></p><p>I am a little surprised you would be seeing this in 300 PRC as I am using probably the slowest powder with published load data (LRT) and am getting a complete burn in a 26" barrel. That said I think with LRT in a shorter barrel I would likely be seeing what you are.</p><p></p><p><strong>Powders with mfg published load data for 300 PRC</strong></p><p>IMR 7828</p><p>Alliant RL-26</p><p>H4831</p><p>Alliant RL-25</p><p>H1000</p><p>RETUMBO</p><p>Ramshot Magnum</p><p>Ramshot LRT</p><p></p><p><strong>Suggested published mfg load data:</strong></p><p>[URL unfurl="true"]http://blog.westernpowders.com/wp-content/uploads/2019/10/300-PRC.pdf[/URL]</p><p>[URL unfurl="true"]https://www.hornady.com/assets/site/hornady/files/load-data/300-prc-v2.pdf[/URL]</p></blockquote><p></p>
[QUOTE="OutsideSeth, post: 1945578, member: 113338"] A chrono would help you validate if this is indeed the issue. It sounds like you tested at both 100 and 600 yds. At 100 yds it would be very difficult to tell the difference between charges in a magnum cartridge they are going to be so close together at that range. At 600 yds you should be seeing a difference. There are a lot of things I don't know about the load you are working up, but if it were me and there were no pressure signs and I was happy with the velocity; I would choose the charge where the plateau starts and go with that. If I wasn't happy with the velocity then I would choose a faster powder with mfg published load data for 300 PRC and work up with a faster powder. I am a little surprised you would be seeing this in 300 PRC as I am using probably the slowest powder with published load data (LRT) and am getting a complete burn in a 26" barrel. That said I think with LRT in a shorter barrel I would likely be seeing what you are. [B]Powders with mfg published load data for 300 PRC[/B] IMR 7828 Alliant RL-26 H4831 Alliant RL-25 H1000 RETUMBO Ramshot Magnum Ramshot LRT [B]Suggested published mfg load data:[/B] [URL unfurl="true"]http://blog.westernpowders.com/wp-content/uploads/2019/10/300-PRC.pdf[/URL] [URL unfurl="true"]https://www.hornady.com/assets/site/hornady/files/load-data/300-prc-v2.pdf[/URL] [/QUOTE]
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Reloading
300 prc load development
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