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Best load for 7RUM

 
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  #1  
Old 01-03-2008, 05:16 PM
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Best load for 7RUM

What is the most accurate load you guys have found for the 7rum? I have a Rem Sendro.Installed a muzzle break and it does not seem to group a well. My best load so far is 82g of RL 22 with 160gr acubond and 90g of RL25 on the same bullet. Tried the hornady 162 sst seems to shoot the same. Have some 168 bergers on the way Thanks in advance Dan
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Old 01-03-2008, 05:26 PM
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Glover,
What length barrel?

I have LSS in 7mmRUM 26" also...it would be good to know what is not working and what is. I am waiting on on dies so I have not started working on anything yet, but plan to soon.
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Old 01-03-2008, 05:50 PM
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Factory 26in stainless fluted. H&S stock. Only mods is the break and a trigger job. Its shoots good but just not quiet good enough Dan
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Old 01-03-2008, 07:20 PM
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I have found great success with the 162 SST's but I have some 168 and 180 Bergers to try as well. It will shoot just over 1/2 moa with the SST's.

In working up seating length for the Bergers I have run into a problem with the factory Rem 700 barrel. The throat is so long that seating them at, or into the lands creates an OAL that is so long I have to remove the bolt in order to extract the cartridge. Not sure how I'm going to work around this yet if at all. I have read that a very small percentage of shooters have had decent results in jumping them, but the majority find the best accuracy at jam or jam+ lengths.

I know the solution is to either set the barrel back and rechamber with a shorter throated reamer or just rebarrel completely...if there is such a thing as a short throated 7RUM reamer.
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Old 01-03-2008, 07:48 PM
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I ran in to the same problem with the throat being to deep to set the bullet on or just at the lands so I made them as long as possible to fit in the magazine. Sure would like to here from some of you guys with some recipes of powder. Is the 22 better than the 25 like it is on the 7mm mag?
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Old 01-03-2008, 07:59 PM
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Mine likes Retumbo. I also tried 7828 but had better ES, SD and accuracy with Retumbo.
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  #7  
Old 01-03-2008, 08:58 PM
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Brain, if you need a re-chamber to a short throated 7mmRUM, I can put you in contact with the 'smith who has the one I spec'd from Dave Kiff. It's a good one.

As far as powders, 5010, Retumbo, one of the RLs. I have some slooooooow Vihtavouris coming soon........
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