I've run 147's over 7.8 grains of BE-86 on Hitek coated bullets. But mostly I run 125 gr Hitek over 8.4 grains of BE-86. Never tried 180's. You can find users load data on DaGoogle.
I just use standard Dillon dies except for the crimp die. For that I use the Lee factory crimp die, which is really a floating collet, so you don't have to trim 357SIG cases. It allows for about +/- .005" in case length.
Looks like AP100 is similar to IMR SR 4756 (from the ADI website). If you can find it... If you are from Australia, I would check with the local IPSC clubs and see what those guys are running. They use 180's quite often.
BULLET WEIGHT
125 GR. SPR GD-HP
CASE
FEDERAL
PRIMER
WINCHESTER SP, SMALL PISTOL
Lot's of IPSC hosers run 180's in .357SIG. It's not so much a barrel issue, but Glock mags won't feed much past 1.150".
OP, forgot, don't run cast lead at 357SIG velocities unless you want to spend your waking hours cleaning the barrel. Lead is a PITA to get outta polygonal rifling.
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