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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338-300 Win Mag (338 Patriot)
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<blockquote data-quote="thesheepdog" data-source="post: 1289156" data-attributes="member: 81455"><p>I think the case has 80gr H2O capacity IIRC, so I can definitely put more powder in there. I do plan to do hotter loads down the road eventually. Maybe with some Retumbo. I think getting the velocity a little higher to work in, say 24" barrels would be cool. </p><p></p><p>2700 with a 285gr would be AWESOME. I built the load data off a 330 Dakota because it had similar case capacity. I need to revisit this.</p><p></p><p>Have you tried a slower powder for your 338 RCM? I found the slower powders work better for long barrels and heavy projectiles...even in smaller cases. I'm running RL17 for 208gr AMAX in my 308 long throat barrel, 24" at 2600. </p><p></p><p>I do want to do more prototyping down the road. Hoping some other people get on the 338-300 Win Mag bandwagon and bring even better results to the table. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="thesheepdog, post: 1289156, member: 81455"] I think the case has 80gr H2O capacity IIRC, so I can definitely put more powder in there. I do plan to do hotter loads down the road eventually. Maybe with some Retumbo. I think getting the velocity a little higher to work in, say 24" barrels would be cool. 2700 with a 285gr would be AWESOME. I built the load data off a 330 Dakota because it had similar case capacity. I need to revisit this. Have you tried a slower powder for your 338 RCM? I found the slower powders work better for long barrels and heavy projectiles...even in smaller cases. I'm running RL17 for 208gr AMAX in my 308 long throat barrel, 24" at 2600. I do want to do more prototyping down the road. Hoping some other people get on the 338-300 Win Mag bandwagon and bring even better results to the table. :) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338-300 Win Mag (338 Patriot)
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