I have a weird old mould--a two cavity Lyman #358101. It casts a 75 grain .359" wadcutter bullet that can be lubed in the Lyman 45/450/4500. I think they are meant to be loaded two-at-a-time atop each other using 148 grain wadcutter data in 38 Special and 357 Mag brass.
Over the years I've loaded several hundred of these. Most have been given 3.0 grains of WW-231 with two bullets seated atop each other. These confuse chronographs and make them do weird things. Three bullets won't fit into 357 cases without eating most of the powder space. I have run these from 700-1200 FPS, and as the speed increases the two holes separate more widely. Most bullets seem to hit flat-on like a wadcutter and cut clean holes, and hit 2"-3" apart at 7 yards. The few cocked hits came at 1100 FPS or higher, maybe the 'Chuck Yeager Effect' is taking hold--dunno.
These flat little critters weigh the same as a 36 caliber roundball from an 1851 Colt cap & ball revolver. They do have value when provided to friends that fancy themselves to be All That And A Bag Of Chips with a Davis-barreled PPC wheelgun. 12 nice round holes instead of 6 on a B-27 target produces some consternation, but that scam only works once--and it gets around quickly.
