Sounds good LB, I'm looking forward to your report. The nose to crimp groove measurement appears to be greater on the the 510 grain CEB solid than the 400 grain version so its good to know that that bullet will feed with no issues. I've got 1,000 400 grain CEB's and 500 450 grain A Frames on hand so I'm gonna stick with those. I do want to experiment with faster powders in the 50-110 with those bullets now that I've got some time. I use RL7 and IMR 4198 in the 50 Alaskan so will probably start with those.