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7mmRUM & Retumbo

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Unread 02-12-2003, 10:44 AM
Bronze Member
Join Date: Oct 2002
Location: Hudson Valley, NY
Posts: 36
Re: 7mmRUM & Retumbo

Speedbump - I have a 7 RUM w/ some 7828 & Sierra 130 Matchkings. I noticed you had used some Sierra 130's - did u ever use them w/ 7828? If so, any loads you could recommend (or not recommend). Thanks.
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Unread 02-12-2003, 08:03 PM
Gold Member
Join Date: Jan 2003
Location: centre,alabama
Posts: 948
Re: 7mmRUM & Retumbo

have you tried any WMR,R25, I shoot rum in
.338,and .308 and WMR will make em scat.The
reloader 25 is very accurate!I will have a7
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Unread 02-13-2003, 08:26 PM
Silver Member
Join Date: Mar 2002
Location: Southern Illinois
Posts: 397
Re: 7mmRUM & Retumbo

I have shot a few 130s with IMR7828. I don't recall the powder charge, but they were running @ 3,671 max. Decent groups too.

I shot some 130s & RE25 as break-in loads. They went into .522". I was thinking that was the 7828 load, but I checked my data book & it was 90gr of RE25.

Make SURE you back off loads & work up. The 7RUM spikes pressure VERY unexpectedly. It can bite you in your grinner in a hurry.
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Unread 02-19-2003, 06:54 PM
eb eb is offline
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Join Date: Jan 2002
Location: Loxahatchee, Florida U.S.A.
Posts: 44
Re: 7mmRUM & Retumbo

speed bump haye 300jarret and 300ultra mag , i am using H 870 in both but have bought a lot of ww872 as i cannot find H 870 in hodgdons catalog . There is still some around with dealers. Ask Darrel about ww872 ihear he uses it with great results. ebb
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Unread 02-24-2003, 11:29 AM
Silver Member
Join Date: Mar 2002
Location: Southern Illinois
Posts: 397
Re: 7mmRUM & Retumbo


Darryl told me about the WC872 a while back. I need something that'll shoot tight in hot weather, since the competitive applications will mostly be in the summer in the midwest & mid-south.

If I get time to try it, it sounds like a very good possibility for cold weather hunting.
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