I'm almost through my first 1k, so I will know after shoot the rest and size them if they need to be trimmed again. These were all once fired from Sage, and after cleaning them and resizing them the first time, the only ones that needed trimming were the "R-P" head stamps. All the rest were from 0.860"-0.863". The "R-P" were over max length which is 0.865". The most uniform ones were the SIG head stamp, then the Speer. The "R-P" and Speer head stamp were all tiny flash hole like the Lapua rifle brass.