I like the suggestions, both using the similar cartridge and the link to Hodgen,
From the link it sounds like unless you compress or over crimp you really can't over stoke it.
I have to get out this weekend and cast some more bullets from wheelweights. One of my molds throws bullets at .360-.361 perfect for 38 S&W
I also want to work up a load for my 303 Jungle Carbine, a real shoulder breaker