1. Remington 3 1/2" hulls trimmed to 2 7/8"
. 30 gr of 7625
4. SP-10 wads
4. one 20ga 1/8" cardboard wad in bottom of shotcup.
5. 1 1/8 or 1 1/4 oz of shot
6. recommended shot buffering used in the Bismuth
7. assmeble in MEC 10 ga press that has the shell plate jacked up with a 3/8" plywood shim.
NOTES: some adjustments in shot weight or internal cup filler wad may be necessary,
"depending on", to get a nice folded crimp. Also, this same basic load will propel Bismuth shot, in a quantity to fill the cup, vy nicely. Can't cite the pressure offhand, but pubished as relatively low.
Some time ago, Russ Gray and Jerry Lape, among others, formed a Ten Guage group, about the time Armbruster was running his published Ten experiments in DGJ. My copy of the TenGA group's data -- which ballistic pressure testing was paid for by it's members -- is AWOL in the loading room.
However, it's possible that someone still has it. The 7625 load I listed was published by Ross Seyfried [and others], and was my standard Light Ten load. I bought mass quantities of the components from Ballistic Products, which simplified production. When I sold my last Ten, the remaining balance went with it.
Lead or Bismuth, 30 gr of 7625 in that wad/hull combo, and some willingness to adjust the shot weight/internal shotcup fill-up wads, and you can keep those Tens rolling, with nice tight star crimps and sized hulls..
