7wsm barrel trimmed down to 7/300wsm

[jabey9210]

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]

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

 

[tbrice23]

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.