First off what are you shooting them out of? My old Lyman book has the 230gr in it but its at my old house. However I shoot 9.5gr of W231 out of it. Its a Ruger blackhawk. You can load out of the Thompson contender side of the Lyman 48th book for a blackhawk. But if you wanna be safe load with the cast 230gr data and you'll be fine.
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