Can't suggest a load for a steel snubby,mine is alu framed(mod 37).+P is if not ''verbotten'' at least not recommended.I cast my own swc(150gr old NEI mould that comes out lubed at 154gr),Put it on top of 3.8 Titegroup(chronoed at a little above 900fps out of a couple of 6''tube;guess must be still doing around 800 from the Lilliput tube).Accuracy is good for a shorty.The kick is not objectionnable.It will kill a bear provided the bear is very close,very calm and doesn't weight more than 168#s!
Qc