I wouldnt worry about steel shot in the shotshell loads, but if I was, I'd get the volume right first, then into the scale and guesstimate the powder charge. I dont recommend YOU try this, just that I have.
Jim LEO,
I suspect that our loading techniques and/or tooling is different. My RCBS dies are twofold. One "set" is merely a case forming die, used with an extended shellholder. Run a .308 up into it, cut off w/hacksaw, file flat, inside deburr while in die, pull case out, outside deburr.
The other "set" is a 3 die loading set. The brass profile looks just like the CCI shotshells. I use a 410 shotgun shell wad seated over powder charge with a wooden dowel, trim excess flush with case mouth with sharp knife. In goes the #9 shot. I originally used plastic page protector sheeting, cut much like you did your cardboard. Problem was the rounds weren't very durable. They would cycle the action reliably, but sometimes dump the pellets out,(no glue on mine), so I reduced the shot charge until I could get a single 00 buck in the top to seal it all up. The rounds are now very durable, still cycle the action and with the 00 in there, improve the versatility of the round also. They throw an excellant rabbit size pattern at 25-30 ft., and the 00 is nicely centered.
My only complaint with these loads is that my Glock has a 99% failure rate in setting off the large rifle primers, not enough oomph in the striker. My series 80 Colt is 100% with them.
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"Always place your clothes and weapons where you can find them in the dark"
Lazarus Long
