7mm whisper
#12
Spike
Thread Starter
Join Date: Feb 2017
Posts: 9
357/7mm super
I don't think its a7mm whisper cause it has a rim. Im thinking it is a 357 maximum necked down to 7mm. The gun is a BSA Martini rifle with a1.125 inch diameter barrel. I made some cases out of 357 magnum but the neck is too short.