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7mm/338 NORMA MAG

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Unread 06-23-2009, 01:29 PM
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Join Date: Apr 2008
Location: Maryland
Posts: 13
Re: 7mm/338 NORMA MAG

Can some one help me out; I'm an accountant not a gunsmith. To get a better understanding of the discussion I've looked at size, capacity, etc. of the various 7mm cases. Really, I don't have a clue as to why the 338 Norma case is superior to the 7mm RUM case. I'm trying to learn about the 7mm/338 Norma as it sounds like a great project. Any help appreciated.
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Unread 06-23-2009, 06:55 PM
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Join Date: Apr 2008
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Re: 7mm/338 NORMA MAG

This is a comparison between Kirby Allen's 7mm Allen Mag and the 7rum.

7mm Allen Mag vs 7mm RUM

There isn't any information out on the 7/338 norma mag since it is relatively new. I hope it will be close to Kirby's Allen Mag.

"Amazing things can happen when preparation meet opportunity" Richard Schatz

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Last edited by blipelt; 06-23-2009 at 07:00 PM.
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Unread 06-23-2009, 10:29 PM
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Join Date: Mar 2006
Location: Alberta
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Re: 7mm/338 NORMA MAG

I am interested in this round, but have until this point been considering a 7WSM or 7-300WSM.
Can someone explain to me the the purpose of the 200 freebore used with the bergers, as I thought Bergers need to be seated into the lands ? How are the bergers shooting with the free bore and is there a slope to the lands ? Sorry to get of topic, sort of...

I did read the Stricker "making VLD's shoot article", but my concern is with the chambered 200 freebore, you are committed to seating off the lands, which may or may not work, no ?

Last edited by Kalashnikov; 06-23-2009 at 10:48 PM.
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Unread 06-24-2009, 05:55 AM
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Re: 7mm/338 NORMA MAG

What is the powder capacity of the parent cartridge, the 338 Norma Mag?

This will give you an indication of what you can do with it compared to a 7mm RUM or a 7mm/300RUM

If a 338 Norma Mag will not beat a 338 RUM by a fair bit, then I don't think the 7mm/338 Norma wildcat would offer much over the standard 7mm RUM?

Maybe better brass would be available?
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Unread 06-24-2009, 06:25 AM
gbp gbp is offline
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Join Date: Aug 2006
Location: California
Posts: 227
Re: 7mm/338 NORMA MAG

You can contact Chris Matthews at Long Range Hunting Rifles from Long Shot Rifles Custom Built Rifles
he is currently doing range testing on the 7mm HG
Keep in mind that all smiths that i know of are very busy right now
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Unread 06-24-2009, 05:11 PM
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Location: Las Vegas, NV
Posts: 619
Re: 7mm/338 NORMA MAG

It is my understanding that the 338 Norma capacity is nearly identical to the 338 LM. I have not taken the time to compare the H2O capacity of the 388 Lm with a 338 RUM (I do know that the 300 RUM has a bit more capacity than the 338 RUM).

When mine shows up I can update the forum with my results when I test the capacity.

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Unread 06-24-2009, 05:14 PM
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Join Date: Aug 2008
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Re: 7mm/338 NORMA MAG

Maybe better brass would be available?[/quote]
Norma has gone through great steps and improved the brass for 338 mag greatly. The ones I have are very consistant in weight. I know that weight alone dosn't decides a brass makers quality. I think it is MUCH better than remington's brass for the ultra mag.

Last edited by RH300UM; 06-24-2009 at 05:15 PM. Reason: update
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