Ruger has in general very tight chambers on the 45 acp cylinders. If you were to get the cylinder recessed, you should also have the chambers rethroated and uniformed. Neither of my Blackhawks will chamber ammo that flows through my Kimber.
The 45 acp is also generally the most accurate of the two cylinders by far. I would not change it for that reason.
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Front sight and squeeze
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