It's interesting that in all the documentation I didn't see this bullet being  listed as a sto ring but I dug mine out and cast a few and realized it is. My alloy is indoor shooting range and fairly soft. The nose is .298 stop ring is .320 and the rear bands are .310.

I played with the stop ring concept A few years ago and never found an advantage to it in my 30 calibers. I even had a couple of standard Lyman designs made with an added stop ring by Erik Olin.

Anyway I thought I'd post a picture of it with the information in case anybody runs across one they  know what it is.

calledflyer wrote on May 3^rd, 2019 at 12:25pm:


I had a 30 wasp for a short time. that was quite the cartridge in the cast bullet Association over on the west side.