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.375 rum

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Old 12-05-2012, 12:41 PM
Junior Member
Join Date: Dec 2012
Location: Lewis, CO
Posts: 2
.375 rum

Has anyone loaded the .375 Ultra Mag with the RM 375 gr bullet. I have been looking for something like this and want to try them. It would be helpful to have a little starting data from others who have already taken this path. I have a custom #1, so OCL is not an issue. This thing shoots under 1 moa. Has 26" Shilen. Also have chrony and private range to 600, so will be posting data when I'm done. Jim
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Old 12-05-2012, 10:02 PM
Bronze Member
Join Date: Sep 2012
Location: Christiansburg, VA
Posts: 51
Re: .375 rum

Welcome to LRH!

Glad to see another 375RUM shooter! I have not tried the 375 gr RM bullet. My 9lb UNbraked LSS is a beast with 260 Accubonds. I am interested in seeing your results from the test though.

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Old 12-05-2012, 11:55 PM
Junior Member
Join Date: Dec 2012
Location: Lewis, CO
Posts: 2
Re: .375 rum

Thanks Tom,

I found your comment especially interesting. The 260 AccuBond has been my choice of bullets also. I have harvested three Elk with this bullet. they leave my Shilen at a little over 3100fps behind 94grs of IMR-4350. This is not a max load, but very accurate. I was fortunate enough to recover all three of those pills and they look like clones of each other. Perfect performance! I will post a picture of them. Also, I'll let you know how the heavier bullets "pan out". It would be nice to find some one who had a few I could buy.

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Old 12-06-2012, 10:09 AM
Platinum Member
Join Date: Dec 2009
Location: 4422′44″N 1082′35″W
Posts: 3,851
Re: .375 rum

I am very interested to see your results. I shoot the 270 TSX out of my RUM at 3150 106 grains of RL19. I have thought about trying the 300 or 350 TSX but the combo I have now is shooting great.

Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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