Andrew,
I tried to get Ruger to fit an extra .45 acp cylinder to my Bisley Vaquero in .45 colt. They wouldn't do it. Said they would only fit an extra cylinder to a revolver that was originally sold with two.
Ended up buying a Blackhawk convertable.
BTW: Even though the cylinders are hand fitted to an individual revolver, the .45 acp cylinder from the Blackhawk works fine in my Vaquero. Just lucky I guess...
Joe
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