7mm JRS

Hey Fred, the gun writer John Sundra was the originator of this wildcat round he hunted the World and wrote many a great articles . If I can dig up some info I'll pm you here , Cheers jjmp.😉🥳
 
When I was more of a wildcat guy, I looked at this cartridge 20+ years ago. I liked Jon Sundra and he did come up with a cool cartridge.

Just for simplicity sake and at a slight cost in performance, I just ended up with a 280 Ackley Improved.

If you're really into wildcats, then the 7mm JRS is worth tinkering with. If not, I would just set the barrel back and re-chamber to a 280 AI.
 
So longer coal then a 7 prc with a .473 bolt face? Is it based off the 30-06/it's parent case? Would you need a CIP mag to feed 180+ gr bullets? Without putting the boattail past the neck shoulder junction. Anybody know?

Thanks.
 

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