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338/300 RUM loads?

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Unread 09-18-2007, 06:23 PM
Bronze Member
Join Date: Apr 2007
Location: Cumberland Plateau
Posts: 65
338/300 RUM loads?

Working up a load for a 34" bbl 338/ 300 RUM with 300 grain SMK's. I am at 88 grains of Retumbo and .19 moa groups...about 2700 fps. I don't know how far I can go with Retumbo without dangerous pressures. Any suggestions?

What can I expect from US869?

Any other load suggestions?
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Unread 09-18-2007, 06:46 PM
Platinum Member
Join Date: Feb 2004
Location: Pennsyltucky
Posts: 2,627
you probably have a few grains to go. just load some up one grain at a time till you get an extractor mark. then consider 2 less grains about max. Retumbo will give you more velocity but most don't get as good of accuracy at long range because your ES will probably be higher. H1000 will produce less velocity but usually the best accuracy at long range.
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