so I found a Whitworth in 7mm remmy mag. for pretty cheap. What 9.3 can I convert to?

If you set the barrel back you might be able to make it a 9.3 BS, depending on barrel diameter.

Otherwise I'm sure you wouldn't be the first to have a 9.3 on a 7mm RM case. I'd probably use 338 WM brass to form into this cartridge.

.358 Norma might be fun.

The 9.3 Brenneke is close but looks like barrel would need to be set back. Have you looked at the 375 Ruger?

Or,leave it 7mm RM and go kill animals with it.

9.3 USA and/or .366 Alaskan use the standard length belted magnum case if you don't mind a wilcat.

He may need heavier bullets for gigantic desert jackwabbits...

I'm thinking a 7RM may just bounce off such critters...

And, he's a Loony. Don't rain on his parade...

DF

Every one's a critic.

Elk, your suggestion makes way too much sense...

DF