There is one other thing you might want to keep in mind whenever you change a cylinder in the Colt SAA. Where a lot of people would call this headspace, it really isn't. What it really is, is the distance between the rear of the cylinder and the front of the recoil shield. This space must be kept within the allowed tolerances. This information isn't mine by the way, it's in Jerry Kuhnahausen's Shop Manual on the Colt Single Action Army.
The information below is what's in the shop manual by Kuhnahausen:
Cartridge Case Rim ThicknessCase Head ClearanceHeadspace Gauge Rim Width
45 Colt .049 min/.060 max .006 .062 (go) .067 (no go)
44-40 .055 min/.065 max .006 .067 (go) .072 (no go)
44 Special .049 min/.060 max .006 .062 (go) .067 (no go)
38-40 .055 min/.065 max .006 .067 (go) .072 (no go)
38 Special .048 min/.059 max .006 .060 (go) .066 (no go)
357 Magnum .049 min/.060 max .006 .060 (go) .067 (no go)
32-20 .055 min/.065max .006 .067 (go) .072 (no go)
The cylinders are to spec. It doesn't make a difference between the bushing types. Long as the head space is correct like stated above and lock up is no different than the original. I placed 2 45acp cylinders into two of my shooters and they work just fine.
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