Ridge Runner

what is the rifle? your certain its a 357/7mm super mag? no stamping on the barrel? did you measure the bore?
RR

Don Sr.

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.

Don Sr.

no stamp on gun bore is 7mm.

Don Sr.

no marking on barrel bore was slugged its 7 mm

Ridge Runner

and it has a 357 mag bolt face? let me do a bit of reasearch.
RR

Don Sr.

Gun is a BSA martini rifle with a 1.125 inch diameter barrel. Cartridge must be rimmed. Bore was slugged its .284/7mm.If you use regular .357 brass the neck is too short when you fire form .

Ridge Runner

357 maximum perhaps?
RR