270 WSM to 300 WSM

[reb]

Hi There
I was wondering if anyone has or if it possible to neck 270 wsm up to 300 wsm?
Any input would be great.
Thanks Reb

 

[billdick]

Are you meaning just the brass? Then yes it will work. Try one and go slow with some lube in the neck and if it looks like you are wrecking things anneal the brass and it will be real easy. I just did a bunch of 7mm stw up to 8mm rem mag the other day and had no problems after annealing.

 

[c-fbmi]

I much prefer to fireform them, I find the necks come out a lot more concentric.........

 

[wcat]

I just ran 37 270WSM brass in my 300WSM die, all came out good except two that the neck split up.
Couldn't anneal them prior as they were already primed (yes, I adjusted my decapping pin up to keep the primers in)