Calvin,
I load smokeless with 700X or 4756, SP-10 Wads, Circle Fly 16 gauge fiber as filler wad, and depending on the height of the shot column compared to the length of the shell sometimes I do use apply pressure on the crimp to seat the shot column a little bit deaper. This will of course raise pressures slightly but when loading for 6000 PSI if it is bumped up to 7000 PSI it is still plenty safe for guns with thick Damascus barrels in good condition.
Respectfully,
Mark
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