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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 RUM with 210 BERGERS
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<blockquote data-quote="J E Custom" data-source="post: 427522" data-attributes="member: 2736"><p>I think you are on the right track with 94 grains of Retumbo. there seems to be a lot of RUMs</p><p>that like this load. go up or down in 2/10ths grain increments and you will find the NODE.</p><p></p><p>I all start with the bullet farther away from the lands so that I can find the MAX load without</p><p>any problems and then adjust the seating depth to tweak the load.</p><p></p><p>I would back off to .020 to .025 to start with and try that first. I like the 215 M but would</p><p>try a 91/2 rem primer or a 215 (NO Match) they are a little hotter so watch for pressure</p><p>signs.</p><p></p><p>The other thing that could be effecting SDs is bullet grip . check neck thickness and if it varies</p><p>you need to turn them for a more consistant grip on the bullet.</p><p></p><p>For best results only make one change at a time or you may mask a really good load potential.</p><p></p><p>The RUMs are very forgiving and load development should go fast if you are careful to keep</p><p>tract of any changes.</p><p></p><p>The only problem I have with the Retumbo is that it can become critical (Over pressure) very</p><p>easy and case density is not where I like it.(I prefer 99 to 100%) but it does have it's following.</p><p></p><p>Just some thoughts.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 427522, member: 2736"] I think you are on the right track with 94 grains of Retumbo. there seems to be a lot of RUMs that like this load. go up or down in 2/10ths grain increments and you will find the NODE. I all start with the bullet farther away from the lands so that I can find the MAX load without any problems and then adjust the seating depth to tweak the load. I would back off to .020 to .025 to start with and try that first. I like the 215 M but would try a 91/2 rem primer or a 215 (NO Match) they are a little hotter so watch for pressure signs. The other thing that could be effecting SDs is bullet grip . check neck thickness and if it varies you need to turn them for a more consistant grip on the bullet. For best results only make one change at a time or you may mask a really good load potential. The RUMs are very forgiving and load development should go fast if you are careful to keep tract of any changes. The only problem I have with the Retumbo is that it can become critical (Over pressure) very easy and case density is not where I like it.(I prefer 99 to 100%) but it does have it's following. Just some thoughts. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 RUM with 210 BERGERS
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