The old model Vaquero can safely handle the 25-30k Ruger only loads. I found the recoil of a 275gr bullet @ 1050fps difficult to control in my 7.5" Standard Blackhawk, weighing about 42 oz. My Bisley 45 weighs 46 oz and the grips allow a full purchase. I found that staying with 255gr bullets at about 950-1000 gave me good control in the Blackhawk with good power.
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