What loads are you referring to with the 158s 45-70?
http://leeprecision.com/mold-dc-358-158-rf.htmlthis was just a quick search for a cheap mould with a picture to look at
my mould came from LBT abd weighs 185 grains
i shoot 3 grains bullseye in 38 and
6 grains in my 357mag.......just because i have LOTS of free bullseye
i limit the 357s in my pocket guns with this load as i can't find it listed any where
some find this load brutal in a j-frame but a real pussy cat in the blackhawk
i also tried 12.7 of H110 in the 357 mag
i feel safer with this load in the small 5 shooters
but not worth the expensive powder in the blackhawk and handi
all are plain based......tried gas checks but not worth the time or money
357 MAX 19 grains H110 same 185 slug......undecided about the check for now
you DO KNOW you need a handi in 357mag then ream it to 357MAX to go with that black hawk
that is mandatory...you would know this if you read in the handi forums on GBO