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603Country · March 23, 2020, 05:42 PM

I’ve had similar problems in the past, and with 158 gr Keith type cast bullets. Some rounds were difficult to chamber, and it was due to the crimp putting a very slight wrinkle in the case. It was only a problem rarely but was frustrating. Since I had mixed brass, all I could assume was that the occasional case was a touch longer than the majority of the cases. That would cause the slight bulge/wrinkle in the case when crimped. I got a Lee Factory Crimp Die and that solved the problem.

Also worth mention is that the revolver is an old Python. Since the difficult to chamber rounds don’t have a problem chambering in my 686, I have to think that the Colt chambers are a bit tighter.

March 23, 2020, 05:42 PM	#7
603Country Senior Member Join Date: January 6, 2011 Location: Thornton, Texas Posts: 3,998	I’ve had similar problems in the past, and with 158 gr Keith type cast bullets. Some rounds were difficult to chamber, and it was due to the crimp putting a very slight wrinkle in the case. It was only a problem rarely but was frustrating. Since I had mixed brass, all I could assume was that the occasional case was a touch longer than the majority of the cases. That would cause the slight bulge/wrinkle in the case when crimped. I got a Lee Factory Crimp Die and that solved the problem. Also worth mention is that the revolver is an old Python. Since the difficult to chamber rounds don’t have a problem chambering in my 686, I have to think that the Colt chambers are a bit tighter.