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Why not the 7MM MAG?

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Unread 08-11-2010, 09:26 AM
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Join Date: Feb 2007
Location: Townsend, Montana.
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Re: Why not the 7MM MAG?

Originally Posted by BillR View Post
I just purchased a 7MM Rem Mag in a Rem 700 Sendero

Now all I need to do is get time to work up a load for it. The recoil should be a bit more comfortable than my .300 RUM and barrel life should be good with it.


I just finished setting one of these (7mm Ren Sendero) up for a neighbor with 168 gr Bergers. I started with 68 gr of H-1000 and worked up to 71.5 gr.

Then I tweaked the seating depth. Mine didnt like the bullets seated at .005, .010 or .020 off the lands. As I moved out (away from the lands) the groups shrunk. I stopped at .040" off the lands when the rifle produced two conscutive 3 shot groups in the 5/8" range at 175 yards.

Thought you might get some good from this info.

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Unread 08-11-2010, 01:41 PM
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Join Date: Aug 2009
Location: Carlisle, PA
Posts: 478
Re: Why not the 7MM MAG?

Originally Posted by kc View Post
Every time I see TACTICAL RIFLES, they are in .308 or .300MAG and .338 Lapoua.
I have a 7MAG I got from a friend back in 1982 its got a heavy Barrel and sets in a HS Precision
Bench rest stock with a Burris Scope..My plans are to replace the Barrel back to the 7MAG.
I just love what it did when the Barrel was new it needs to be changed(shot well over 5000 rounds)why do they not recognise this calibre? anything at 500 yards is dead(Deer) even woodchucks. I like this better than the .308?
Good questions. I've asked myself the same thing. I recently purchased a Savage 112 BVSS in 7MAG to be my long range deer rifle. Heck of a fine cartridge. Very accurate, relatively flat shooting, decent barrel life, tremendous high BC bullet selection, easy to find brass, relatively easy to load for once one understands how to size the brass. Lots of thump for taking down deer to a grand, elk to half that, and I can shoot it just fine with out a muzzle brake.

Lot to like about that cartridge. So I have to agree, I think the 7MAG is a better tactical cartridge than the .300MAG or .308.

"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." R. Feynman. (Last sentence of the Feynman appendix to the Space Shuttle Challenger Report.)
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Unread 08-11-2010, 08:53 PM
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Join Date: Jun 2008
Location: Jackson Ms
Posts: 320
Re: Why not the 7MM MAG?

I personally think the load window for an accurate round with the 7mm is fairly fragile and small. I'm thinking about changing out my barrel to 300 win mag as we speak.
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Unread 08-12-2010, 07:46 AM
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Join Date: Feb 2002
Location: Nebraska
Posts: 410
Re: Why not the 7MM MAG?

Thanks for the load info Fitch. That should be a good bullet and load from what I see. Also most of the Remington rifles I own with stock barrels do seem to like a lot of bullet jump at about the amount you stated. H1000 is the powder I have been looking at as its pretty stable for temps.
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