The Hodgdon max load for the 158 gr XTP JHP is 18 gr LIL'GUN for 1577 fps, 10" barrel, 25.8kcup
There is no lead bullet data for LIL'GUN, as there is for AA#9, but I have been shooting 158 gr LSWCs with LIL'GUN 1.590", WSPM:
13 gr. good 357 mag load
17.5 gr. the primer flattens.
21 gr. the primer top hats
21.25 gr. the base of the case expands .001"
My chrono is not working, but from recoil, I would guess that LIL'GUN is much better than AA#9 and a little better than H110 or W296.
WARNING: THESE ARE MY OWN PERSOANAL EXPERIMENTAL LOADS, NOT TO BE COPPIED, THEY COULD BE DANGEROUS IN YOUR GUN!
There is no lead bullet data for LIL'GUN, as there is for AA#9, but I have been shooting 158 gr LSWCs with LIL'GUN 1.590", WSPM:
13 gr. good 357 mag load
17.5 gr. the primer flattens.
21 gr. the primer top hats
21.25 gr. the base of the case expands .001"
My chrono is not working, but from recoil, I would guess that LIL'GUN is much better than AA#9 and a little better than H110 or W296.
WARNING: THESE ARE MY OWN PERSOANAL EXPERIMENTAL LOADS, NOT TO BE COPPIED, THEY COULD BE DANGEROUS IN YOUR GUN!