Tried 'em out
yesterday, just 10 test rounds loaded same as my usual load for NBC 165 FMJ: 231/5.3 grains, Rem. 1-1/2 primer, OAL 1.130, firm taper crimp to prevent setback. Function fine, primers still have a radius, brass not bulged, no barrel leading. I've seen leading with as few as 10 rds of Penn LSWC in this pistol.
Can't comment on accuracy yet.