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7mmWSM from 300WSM brass?

 
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  #1  
Old 01-10-2009, 07:39 PM
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7mmWSM from 300WSM brass?

Looking at the case drawings looks to be possible. Make a false neck and blow the shoulder forward like forming an Ackley.

It would sure be nice to use Norma brass instead of Winchester.

Anybody done it? See any pitfalls?
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Old 01-10-2009, 10:53 PM
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Re: 7mmWSM from 300WSM brass?

Quote:
Originally Posted by geargrinder View Post
Looking at the case drawings looks to be possible. Make a false neck and blow the shoulder forward like forming an Ackley.

It would sure be nice to use Norma brass instead of Winchester.

Anybody done it? See any pitfalls?

The WSMs all use the same headspace gauge so the only thing I think you will have
to do after sizing to 7 WSM would be to turn the necks down a little.

It sounds like a good plan .

J E CUSTOM
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Old 01-10-2009, 11:27 PM
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Re: 7mmWSM from 300WSM brass?

nate did it with this rifle but alittle different



not sure if this is what you were looking for.
long range shooting system by SSG pix & vid.
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Last edited by blipelt; 01-10-2009 at 11:34 PM.
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  #4  
Old 01-11-2009, 12:32 AM
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Re: 7mmWSM from 300WSM brass?

Quote:
Originally Posted by J E Custom View Post
The WSMs all use the same headspace gauge so the only thing I think you will have
to do after sizing to 7 WSM would be to turn the necks down a little.

It sounds like a good plan .

J E CUSTOM
7mmWSM is the bastard, like the 338RUM.

The 7mm is longer at the shoulder than the 270, 300, and 325.
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Old 01-11-2009, 12:42 AM
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Re: 7mmWSM from 300WSM brass?

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Originally Posted by blipelt View Post
nate did it with this rifle but alittle different



not sure if this is what you were looking for.
long range shooting system by SSG pix & vid.
Brent,

Yes, I'm very familiar with Nate's 7mm's. It is the reason that I went with the WSM.

What he is using is a 300WSM necked down to 7mm. He looses a little case capacity, but gains the longer neck and better brass.

Nate makes awesome rifles and does fantastic work. He'd rather have the longer neck and loose a bit of fps with the better brass.

I'm willing to split the difference. I want the better brass, keep the fps, and loose the length of the neck.

I'm not sure with my skills that the length of the neck is going to factor into my accuracy. Basically, that would be the one thing I would be willing to loose.

I'm just not sure that I can make 7mm brass from 300WSM Norma brass.

Last edited by geargrinder; 01-11-2009 at 12:48 AM.
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Old 01-11-2009, 12:47 AM
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Re: 7mmWSM from 300WSM brass?

Here's a quote from Nate's thread.

Quote:
Originally Posted by 308 nate View Post
chambered in 7MM-300WSM by SSG.



Reloading dies Redding .270 WSM type S unaltered with .312 neck bushing.
Forrester 7mmwsm seating die. slightly altered for the shorter case body.
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  #7  
Old 01-11-2009, 08:04 AM
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Re: 7mmWSM from 300WSM brass?

GG, if you were having a 7wsm built right now would you go with the standard or do the 7mm-300wsm? I am setup for the standard but it wouldn't cost to much to change.

I am having a long action built strictly for hunting.

Brent
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Last edited by blipelt; 01-11-2009 at 10:14 AM.
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