Well, it keeps getting better! It looks like I wouldn't have enough barrel shank to set the barrel back "again". The 338 RPM will need .301 set back in order to clean up the Ackleys neck. Seems the RPMs neck is a bit narrower than the Ackleys. So ended up searching for a replacement barrel...
I shot the 350 Round Nose in my old Marlin. 53gr IMR 3031 350RN has been a solid deer/elk/bear load for many years. +1 on the Factory Crimp Die, I wouldn't be w/o one, but especially for a levergun.
I had that Kimber 8400 300 WSM tricked out, put a "like new" but older Leupold 3.5x10 on it and had a brake added. I gathered up all the dies/brass/loaded rounds and extra components and Gifted the rifle to my Son in Law/ He is the Marine Reservist I mention from time to time. He just retired...
Now I have to start all over! I ha. I had my rifle reamed out to the Ackley Improved, which means the smith had to set the barrel back to clean up/make the correct Headspace, plus a crush fit. This, in effect, did away with the longer throat it had before, as an A-Square. My previous load of...
Brother Doc- Thank you so much for posting up that data for me.
Uncle Henry- I've had trouble getting my computer to post pics. I will try again soon. As it is, the rifle is just a synthetic stocked stainless BDL with a 26" barrel.