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Reloading Berger Bullets


300 RUM berger 215gr hybrid load data ?

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Unread 07-17-2013, 09:21 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
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Re: 300 RUM berger 215gr hybrid load data ?

I would start out with about 87 gr of Retumbo and work up 1 gr at a time and expect to see max around 92-94.

The difference between Retumbo and H1000 is Retumbo is a slower burning powder which means you'll need more of it for a max load, which is a good thing. The closer you are to 100% case capacity you are, the better for more consistent combustion.

Also, I have always gotten slightly better velocities with Retumbo with about the same accuracy.

Both are good relatively stable powders.
- Mark

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