7wsm barrel trimmed down to 7/300wsm

jabey9210

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May 10, 2010
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I have a 7wsm barrel I'm using to build a more pack friendly hunting rig than my current 27" varmint contour 7wsm. As hard as WSM brass is to come by I have a bunch of 270wsm. I was wondering instead of fire forming the 270 brass if I could just have .040" taken off the new barrel and end up with a 7/300wsm and for go any fire forming in the future? Or am I missing something?
 

jrsolocam

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Apr 10, 2010
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ND
I don't believe a 7mm/300 wsm will clean out a 7wsm chamber. I'd like someone else to confirm this though.
 

tbrice23

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Dec 12, 2012
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Location
Indiana
I don't believe a 7mm/300 wsm will clean out a 7wsm chamber. I'd like someone else to confirm this though.
I would have to agree. Unless the barrel had a lot of extra shank length to begin with, I believe that you would run out of shank length for the threads before the chamber could be cleaned up.
 

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