Thread: The answer to my 223 ES pissing and moaning?

an update on the 6CM velocities i mentioned in my rifle on the first page:

I kept the main load the same but pulled the expander mandrel out of the F/L die, sized with the usual 2 thou bump. Then used a mandrel (actually the mandrel from a .243win Lee collet die) to expand the necks in a second stage.

The accuracy might be slightly better, which was always good but the velocity over approx 20 shots is now SD 8.5 & ES 30. So definite improvement. I'll skim turn the necks and see if that helps more (because i can and i like tinkering).