7mm WSM brass

swpc629

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Joined
Dec 5, 2009
Messages
276
Location
Gardendale, AL
Does anyone have an opinion on whether you can resize 270 wsm and 300 wsm brass to 7mm wsm brass? I know there is a different headspace for the 7mm than that of the 270 and 300.
 

dirtball

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Joined
Jan 18, 2007
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781
Location
Fairfax County, Va
If you are resizing 270/300 WSM brass because you cant find 7 WSM brass and are going to fire them in a standard 7 WSM chamber then use the 300 WSM brass and only size the neck down to where you have a snug fit when closing the bolt, leaving part of the 30 cal neck as a false shoulder.
Dave
 

geargrinder

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Joined
Nov 6, 2006
Messages
2,007
Location
Dayton, Nevada
I use the 270 brass. I'll neck up to 30 cal. Then size to 7mm leaving the false shoulder.

I use the 270 brass because my chamber neck is on the small side and I don't want to turn thick necks.

I'm also using Norma brass. I don't think it would be worth the trouble for factory brass.
 

4bycamper

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Joined
Apr 11, 2009
Messages
622
Location
Eastern Colorado
geargrinder;344824 I'm also using Norma brass. I don't think it would be worth the trouble for factory brass.[/QUOTE said:
+1 on Norma brass. :)
I'm very happy with the quality of 270 WSM Norma Brass.



JM .02
 

J E Custom

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Joined
Jul 29, 2004
Messages
10,295
Location
Texas
+1

If I were going to size from 300 wsm it would have to be the lapua brass, and they don't
make it so I use the Winchester 7mm WSM and have no complaints.

I can weight sort the Winchester and end up with matched brass a lot cheaper that
has the right case head stamp on it.

Norma makes good brass but they are proud of it.(twice as much as the Win or Rem brass)

J E CUSTOM
 

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