Well, a partial update on this..... I cut the throat on both of my barrels. I decided to cut it so that a 123 gr Amax was touching the lands at 2.3", max mag length is 2.28". This allows me to load 120 gr Amax at 2.2" which should work. I made a case (see picture) to use as a spacer gauge, but it would have required a spacer to get thread contact and I decided it was too many moving parts, and just used the spacer it came with......I do think this would work really good with a longer case. All I can say is go slow, it would be really easy to cut too much.....We are in the middle of a heat wave so I'm waiting to do further testing, but I had to at least try it. I had picked up some AA2520 to try, so I loaded a couple 3 round sets and shot them tonight as it started cooling down. 28.5 grains showed promise with a .3" group and a .6 group......so I don't think I wrecked it! I'll get some more tests loaded up and try shoot this weekend and update further..... If anyone that tagged in has any specific questions, I'll try answer them.
