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I'm going to leave Mr hangfire alone.(I sure as hell hope you were smiling partner, when you used the words BS in my general direction.).And continue with the thread I started.
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I'm thinking these pistols might shoot better if the step was tapered or simply removed all together. This simply doesn't sound like a good thing! 405" and then trying to get through the step in the chamber. Using Cowboy 45 brass, the 45 SLIM bullet at. I'll measure those cylinders and post later. The 1858 revolvers do not exhibit the flier issue and are quite accurate. I have another set of 1858 Piettas with the Howell cylinders and they too have this step, but not as pronounced. The pistols shoot fine, but there are flyers. I've attached a drawing that shows the Kirst chamber in comparison to a standard 45LC chamber.
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Not a cartridge that headspaces on the rim. Looks like the chamber for 40S&W or 45ACP or other cartridges that headspace on the mouth. I can't figure out why there is a step in the chamber for a 45LC. One concern I have is the chamber dimensions. I bought and installed a pair of Kirst 45LC conversion cylinders into a set of Pietta 1860 Colt Sheriff models.
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