I just got two new cylinders for a couple of Pieta's. One I've been using the old cylinder from a donner gun that I had way back in junior high school. The original cylinder was borred so far off that I couln't get better than 6" groups. I shinned a light down the bore and found out why, way out of time. Nothing to be done, I got it cheap at a gun show and couldn't return it so I switched cylinders from an old one that the end of the barrel was messed up on(in an early atempt way back when to chang the front sight blade I inadvertantly caused a swell in the ID of the barrel from a pin punch.)
Well I finaly got a mill/lathe and better metal working skills, and decided that I could shorten the barrel on the old gun and make a sheriff's model, and replace inner working parts and springs that I had salvaged for other guns and get it back on the line. I decided that since the old cylinder was a little on the rough side and had a good bit of wear I'd just order a new one for it too.
Well ever since I got the bad cylinder from the gunshow I shine a lite down the bore and check all six chambers. Both cylinders are off the same amount. The edge of the cylinder doesn't extend past the lands, but do extend past the grove a little, like it's over rotated a little. I turned a range rod on my lathe about an inch long and just enough under bore diameter to slip down the barrel. It slides down into the cylinder with out catching on the cylinder.
I have a feeling that if I send the cylinders back I'll only get ones borred the same amount off.
What are your feelings on this? Can I get away with just putting a forcing cone in the barrel? I want decent acuracy, I know there not match grade and are in the end only combat pistols but I don't want a shotgun sized group nor do I want to put undue stress on the guns.
I haven't fired them yet, will have a chance tomorrow.
Let me know what you think,
