Ok, I know this has been beat to death, but..... If the max case length is 1.560 ( cartridge dimensions, Accurate Shooter site) and Alpha brass runs, 1.539-1.541 new, 1.545 fired 3 times, and Lapua measures 1.544-1.545 fire formed and sized , .002 bump. Does the cartridge ever grow in length to be close to the end of chamber so you don't get carbon build up/carbon ring? And if I trim to shortest case oal, im even further back from the chamber "end'"? Maybe over thinking it, but with the Dasher being a top accuracy cartridge, I would think you would want the longest neck and have maybe .005 trim length , or distance to chamber length. Thanks for straightening me out, rsbhunter