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7 MM WSM

 
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  #1  
Old 08-06-2004, 05:47 PM
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Join Date: Jul 2004
Location: Texas
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7 MM WSM

Just finished my new hunting rifel a 7MM WSM
Using a Remington 40X single shot action and a douglas XX stainless Blank.

The first group fired was .347 with Winchester Supreme 140 gr Ballistic Silver Tips.

This was for break in and now I am ready to start reloading.

Any tips on Bullets,Powder,Primer&Brass
for this Cartridge would be great.

Thanks
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Old 08-06-2004, 08:14 PM
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Join Date: Apr 2004
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Re: 7 MM WSM

JECustom ,
WXR seems to be one of the better powders albeit temperature sensitive . RL 22 is very similar . Start at about 66gns with 140gn pills and work up .
I've read about some sensational velocities with H414 and IMR 7828 but think the loads must be much hotter than I like . Believe the factory loads use Magpro .
The 140gn Nosler shoots quite well out of my rifle and performs well on medium game .The CT 140 Ballistic Silvertip is basically the same projectile with a coating I think .
I didn't buy any "supreme" factory loads because I've heard that the nickel flakes off the cases after a few loads and is hard on your dies .
139gn Hornady SST's shoot 2 inch groups out of my Winchester model 70 featherweight . It's no varmint gun but I'm not impressed .
Would be interested to hear whether you find it necessary to full length size after every shot . It seems that many have trouble (myself included)rechambering WSM rounds that are neck sized (with a proper NS die) unless the loads are very mild.
WLRM Magnum primers seem a little more consistent in my rifle although apparently Winchester don't think they're necessary with WXR in the WSM calibres .

[ 08-06-2004: Message edited by: Aussie ]

[ 08-06-2004: Message edited by: Aussie ]
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  #3  
Old 08-06-2004, 09:40 PM
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Join Date: Jan 2004
Location: North Dakota
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Re: 7 MM WSM

HI J E Custom,
162gr.Hornady Amax into the lands
70gr.retumbo
Federal 215 gold medal
this load hit the sweet spot in my rifle.
out of 7 shots average velocity 3155 fps.out of a 1-9, 30" Krieger.
ES 16.3 fps. 700yd 3 shot group 1.550 inches
4-shot group after moving point of aim 2.250
I have also used Ramshot magnum and pushed the 162 to 3290 fps. with 73 gr. but 700yd. 5-shot group measured 5 inches.So I decided to stick with Retumbo. hope this info is helpful,
308nate [img]images/icons/cool.gif[/img]
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Old 08-07-2004, 04:11 PM
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Join Date: Mar 2004
Location: pink hill, N.C.
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Re: 7 MM WSM

J E,
Just about to start working up loads for a Browning A-bolt in 7WSM. It belongs to a friend of mine who plans to use it this Sept. for Mulies in Canada. He's only shot it about 5 times using Federal 160gr Nos Part factory fodder and is not impressed with it. I also shot it, man does that thing hurt! I'm just not in to the pencil thin barrels and light rifles.
I just got (yesterday) reloading dies and 140gr Barnes TSX's in from Midway and was gonna try RL22 and Rem 9.5M's. I'm hoping to improve on the 100yd 2-3" 3-shot groups.
Will post back here as soon as I try it out. Johnny K.
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  #5  
Old 08-09-2004, 02:42 PM
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Location: Texas
Posts: 5,624
Re: 7 MM WSM

Thanks for the help
I now have a good starting point.

PS Jonny K ,My rifel weighs 10 1/2 lbs
so recoil is very mild .

Also thanks 308 Nate and Aussie.
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