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Reloading Berger Bullets


338 edge or 338 ultra mag

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Unread 02-19-2011, 11:59 AM
Junior Member
Join Date: Jun 2010
Location: RockSprings Wy
Posts: 11
338 edge or 338 ultra mag

Don't know if this is the right place for this thred so if it needs moved please move. Im looking at building a big bore. I reload and not worried about fire forming. It will have a 28 barrel. Is there much difference in fps between the two. I will be shooting 225 or 250 noslers. Let me know what you guys think. I have been around a edge but he was shooting 300 grain bullets.
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Unread 02-19-2011, 12:56 PM
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Join Date: Jan 2011
Location: Spokane, WA
Posts: 3,968
Re: 338 edge or 338 ultra mag

My hunting partner runs the "Edge" and I use the standard RUM. He probably gets across the board about 2% more velocity. Our choices probably reflect our personalities more than any technical advantage. The rifles and optics are slightly different as well. I'm a bit more conservative, and like that if need be I can get factory ammo. However, RUM ammo isn't so available as to be a factor. Having the barrel stamped the same as the ammo can be a benefit if you cross many borders. I took a .358 Ackley Improved into Canada with cases headstamped .300 H&H. For whatever reason this raised a flag with the border guard, and I got the most thoroughly searched I've ever been. I guess he thought I had another gun I wasn't declaring. He did let both rifle and ammo pass when he was done a couple of hours later. This was pre 9/11 so I was able to retain a little dignity. Again not big reasons, and I could change and not blink. I think your decisions about the rest of your setup: optics, stock, mounts, barrel, gunsmith will have more to do with how satisfied you are with the rifle.
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Unread 02-19-2011, 02:01 PM
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Join Date: Nov 2006
Location: Dayton, Nevada
Posts: 1,970
Re: 338 edge or 338 ultra mag

I think if you are going to stick with a 28" barrel and 225-250g bullets, having the extra capacity of the Edge is a waste.

The RUM is better suited for the shorter barrel and lighter bullets.
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Unread 02-19-2011, 04:04 PM
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Join Date: Nov 2009
Posts: 63
Re: 338 edge or 338 ultra mag

I just went through what You are and decided a 338 edge for if I ever choose to shoot the big 300 grain smk or berger I have the extra power. For now though I plan on using 225's and maybe 250's. I think that either way it will be a hell of a rifle.

Last edited by edited by; 05-04-2012 at 09:19 PM.
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Unread 02-19-2011, 07:13 PM
Platinum Member
Join Date: Dec 2009
Location: NW MT
Posts: 3,042
Re: 338 edge or 338 ultra mag

I went with a 338 Norma mag, article above in product review section. Designed for 300, but would work well w/250, factory Norma brass and I have forester dies
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Unread 02-20-2011, 06:25 AM
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Join Date: Jul 2009
Location: OZ
Posts: 363
Re: 338 edge or 338 ultra mag

I would say the Rum if you don't plan on using the 300 smk's.

sp6x6, which action did you build your norma on,im planning on a 338 norma for my next build i already have the barrel.
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Unread 02-20-2011, 08:17 AM
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Join Date: Dec 2006
Location: New Mexico
Posts: 1,663
Re: 338 edge or 338 ultra mag

I went throught the same problem several years back. I chose the 338 RUM, so I could shoot factory ammo if needed in a pinch, also, the rifle caliber stamp would match the ammo stamp, as I travel outside the country often. This one reason alone, was the single most factor that made me select the RUM. Foreign countries can be a real pain when it comes to the ammo matching the rifle caliber. I had trouble with a 300win and 300wby before.

Having said that, my 338RUM shoots 225 TTX's and 250 SMK's with excellent accuracy. I have yet to get the 300 SMK's to shoot well. I have since ordered a 338 Lapua, but plan on keeping the 338 RUM, as well. My RUM has taken the largest of the African Plaines animals with one shot kills using the 250SMK. I plan on shooting a Hippo with it. (Brain shot)
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