Minor load work update:
I picked up an expanding mandrel from Cortina and reworked my brass process.
Shoulder bump .0025” with full length die(no neck expander on the de-caper), & .282 neck mandrel in the mandrel die. All to brass with multiple fires. The test was 10rds, average velocity of 2873, SD of 10fps, .75” group at 100.
I did stretch it out with some fire forming loads, I’ve got to get back to reading the wind. Had good consistency out to 600 on a 10” gong.