Hello to all as I am new. I have a 29-2 that the top face of the cylinder drags on the barrel when shooting either single/double action. I have had the cylinder to lock up momentarily at times, but when pressure was let off the hammer(or trigger) the cylinder would then index on around. I am stumped as to what is causing this problem, and was hoping someone could shed some light on the subject for me. Thanks.
Model 29-2 cylinder dragging on forcing cone/barrel
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Hello to all as I am new. I have a 29-2 that the top face of the cylinder drags on the barrel when shooting either single/double action. I have had the cylinder to lock up momentarily at times, but when pressure was let off the hammer(or trigger) the cylinder would then index on around. I am stumped as to what is causing this problem, and was hoping someone could shed some light on the subject for me. Thanks.
jj2am44
Member
I had the same thing with my Model 27 when it was new. The cylinder is too far forward. They do make shims to install in the cylinder (it must be taken apart). Its about a 5 minute job. Welcome to the forum.
john traveler
Member
The problem is most likely "excessive endshake", or too much forward-and-backward movement of the cylinder. You can check it yourself:
Take an automotive feeler gauge, and progressively slip leaves into the barrel-to-cylinder gap. If the gap is more than about 0.012" (twelve thousandths of an inch), it is out of specification. Repair is to install cylinder arbor shims as described by jj2am44.
There is a remote chance that your problem is not enough b-c gap. If you can not get more than 0.002 feeler gage in the gap, it is too tight, and firing residue and bullet slivers will jam the cylinder against the forcing cone.
Take those measurements and report back for the fix.
Take an automotive feeler gauge, and progressively slip leaves into the barrel-to-cylinder gap. If the gap is more than about 0.012" (twelve thousandths of an inch), it is out of specification. Repair is to install cylinder arbor shims as described by jj2am44.
There is a remote chance that your problem is not enough b-c gap. If you can not get more than 0.002 feeler gage in the gap, it is too tight, and firing residue and bullet slivers will jam the cylinder against the forcing cone.
Take those measurements and report back for the fix.
I agree that it sounds like excessive endshake.
If your gun has too much endshake, the cylinder can move too far forward and contact the rear of the barrel (forcing cone) when held forward by the hand in the cocked position. I noticed that you said that when you eased off hammer pressure, the cylinder would rotate again. that definately sounds like excess endshake/hand pressure causing the binding.
If your gun has too much endshake, the cylinder can move too far forward and contact the rear of the barrel (forcing cone) when held forward by the hand in the cocked position. I noticed that you said that when you eased off hammer pressure, the cylinder would rotate again. that definately sounds like excess endshake/hand pressure causing the binding.
I did some measuring and here is what I found, the largest feeler gauge that I could insert between the cylinder face/barrel was .006" of an inch. I measured this with finger pressure holding the cylinder back. I also measured with the cylinder at rest with no pressure applied and could only insert the .003" gauge. Thanks for all Your replies.
Sounds like a little endshake issue here. John traveler should be along shortly with the cure.
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