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338 edge, 300 rum, 7 rum

 
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  #8  
Old 01-18-2012, 11:35 PM
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Location: Boise IDAHO
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Re: 338 edge, 300 rum, 7 rum

I run a 24" 338 edge and it hangs in there just fine but you would not be loosing anything but some muzzle flash going with the 338 rum in the shorter barrels and it might be a hair easier to shoehorn into a magazine for a repeater. Good luck
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  #9  
Old 01-18-2012, 11:45 PM
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Re: 338 edge, 300 rum, 7 rum

Maybe someone can give me an opinion here. As much as i would love to make a 25lb 338 edge with a 32" barrel, its just not that practical for what i am looking to do with it. I am looking to build one right around the same dimensions as the mcmillin "long range hunting rifle" with no more really than a 27" barrel. maybe 28". I just don't want to go through with this build and do a 300 ultra when it is "almost" as good as the edge. I figure might as well go all the way. but in a package this size could i get what it is capable of? I wouldn't really mind a 300 ultra but it looks like the high bc bullets aren't really there like they are with the 338 and why bother with the 300 when it is only the difference of a barrel to make the edge. I know i am probably confusing people, but any help would be appreciated.
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  #10  
Old 01-19-2012, 12:06 AM
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Location: North Dakota
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Re: 338 edge, 300 rum, 7 rum

I have all the ultra mags. The 7mm RUM is a bad apple. There is not much that baby can't do. The 300 ultra is crazy fun and can shoot a very long way. The 338 ultra is unbelievable. I shoot the Barnes 265 ttsx and that baby is as accurate as they come. I shot a elk with it this year and dropped it like I thumped it in the head with a hammer. The 375 ultra is the real deal....if you can stand to sight it in!!!

Get the 338 RUM. Not only is it "ultra sexy", it is a super accurate round that hits critters like a sledge hammer.
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  #11  
Old 01-19-2012, 10:13 AM
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Re: 338 edge, 300 rum, 7 rum

So it sounds like the 7 ultra is a no go. If i were to go with a 27 or 28" barrel would i not really be gaining much from the edge over the 338 ultra? If the 338 ultra would be just as good at this barrel length than i wouldnt have to use a custom reamer and would have more available dies. With this barrel length how would a 338 ultra with 300 smk compare to a 300 ultra with a 230 hybrid?

So i guess what i am asking is what am i loosing by going with the 338 ultra vs the edge, and what would i be loosing by going with the 300 ultra vs the 338 ultra?

I just dont want to spend all this money on this build to find out one little change could have made a big difference.
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  #12  
Old 01-19-2012, 10:38 AM
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Re: 338 edge, 300 rum, 7 rum

If you dont mind going the wildcat route you might look at the 338 Sin. It works in a shorter barrel !
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  #13  
Old 01-19-2012, 01:41 PM
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Location: NW Montana
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Re: 338 edge, 300 rum, 7 rum

28 inch barrel, 338 rum, 300 gr bullets, you will love it !! I would go 300 gr SMK or Bergers 300 gr Hybrid. Both are awesome at long range with alot of energy left at 1000 yards.
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  #14  
Old 01-19-2012, 03:55 PM
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Join Date: Oct 2007
Location: Tillamook, Oregon
Posts: 381
Re: 338 edge, 300 rum, 7 rum

Arrow, here's some numbers for you, maybe this will help. The velocities for the 338's are best estimates for what others are running, you may not get this much velocity out of 27". I am getting 2925 to 2950 out of my 27" RUM with the 230. All are 200 yard zero and at sea level, data numbers are at 1000 yards.

300RUM 230 Hybrid Target at 2,925fps: 1809fps and 1672ft lbs. 232.7" of drop.

338RUM 300SMK at 2,750fps: 1676fps and 1873ft lbs. 267.1" of drop.

338Edge 300SMK at 2,850fps: 1754fps and 2049ft lbs. 246" of drop.
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