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375 vs 338

 
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  #8  
Old 01-08-2009, 12:03 PM
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Re: 375 vs 338

the loading data i have seen puts the 375 rum shooting a 300 gn bullet 3000 fps and 350 gn at 2800 with a 24 inch barrel. a 30 inch barrel wont do better? the 338 edge shoots a 300 gn bullet at 2900-3000? these are the two choices i was looking at, thanks bruce
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  #9  
Old 01-08-2009, 06:08 PM
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Re: 375 vs 338

I would say the edge would get you 2800-2850 fps in a 30" barrel with the 350 gr bullet, POSSIBLY.

From my testing, a 338 and a 375 with the same case capacity will drive a 300 gr SMK and a 350 gr SMK to roughly the same velocity respectively. For example, in a 30" barrel, the 338 Edge will get you around 2850 fps, the 375 RUM will likely get you around 2800 fps in a 30" barrel.

I can not imagine any way that you could get that velocity in a 24" barrel without running extreme pressures.

The 375 RUM I used to have, had a 27" barrel and it would drive the 300 gr bullet weights to 2900 fps tops. At that level primer pockets would loosen up at around 4 firings which tells me I should not push things any harder.

Basically, if you like the Edge with a 300 gr SMK, the 375 RUM with the 350 gr bullet will do basically the same thing ballistically but with a larger frontal area bullet and higher kenetic energy payload.

Also remember recoil will be noticably more for the 375. Adding 50 grains of bullet weight at roughly the same velocity will make a difference on how the rifle comes back at you.
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  #10  
Old 01-08-2009, 08:42 PM
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Re: 375 vs 338

I have a stock 375Rum. I know for a fact there is no way you are shooting a 300gr 3000fps out of a 24in tube. You have to push it hard to get that speed with a 260gr.
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  #11  
Old 01-09-2009, 12:23 AM
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Re: 375 vs 338

is there a larger case that can be chambered for 375 cal in the rem 700 sendaro action? can i replace the extractor with something stronger like a ruger claw?
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  #12  
Old 01-09-2009, 10:48 PM
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Re: 375 vs 338

I had wondered what the 375RUM would do with the 350 in a 30''ish bbl, I like when I don't even have to ask to get my answers! Powder is a question I do have with larger bore but heavier bullet would a 375rum/350 combo also use H1000 class powders?? any notes you could share? good huntin=) forgot to ask will a 1in12 twist stabilize the 350smk at rum velocitys?
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Last edited by ought6plinker; 01-12-2009 at 09:38 PM. Reason: forgot twist
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