Poor service from Cimerron

[sweettooth]

 I felt some opentops from Taylors , and they were smooth out of the box and they worked for the man that bought them.
  I know they are both made by Uberti. But there is the matter of quality control.

[will52100]

Well I think I got it fixed.  Still need to test fire to be sure.  The cylinder face was contacting the back of the barrel.  End shake was on the order of .007-.008 with cylinder gap set at .005.  It was also undertimed quite a bit.  I like a little undertiming, just enough to drop the bolt into the lead in ramp, not half way around the cylinder.  A little work and a new hand and that is fixed.  As for the endshake and barrel gap, I milled a little off the back of the barrel and face of the barrel lug, there was a machined area where the gas ring rides that was below the surface of the barrel lug.  End shake is rite at about .001-.002, barrel gap is set at .005.   Wedge goes in farther now, but everything is parralel and hopefully rite.  This should do it, I hope.  I'm just about to the point of not wanting a 51 just from the trouble I've had with this one.  Hopefully I got it fixed.

Thanks for the figures Coffinmaker, I did a little reading but most of my books don't deel with opentop design or problems with them.

[will52100]

Well test fired it today.  50 rounds of 38 LC black powder and 20 rounds of smokless 38spl. and narry a hick-up.  Hard to believe it's the same gun.  Of course I could have saved 6 months of going back and forth with Cimmeron if I'd just fixed it myself, but then I could just as easily been buying a new barrel and cylinder.

Glad to get it fixed, I will probably shoot it in this weekend's match.  I may take the bluing off and do a rust blue on the cylinder and barrel.  I cold blued the cylinder face and gas ring after stoning, and the back of the barrel and lug, but I haven't ever been happy with cold blue.

Thanks for everybodies help.

[Abilene]

Will52100, glad you are back in action with that conversion.  I just love the '51 R-M's!

Coffinmaker, one of my four '51 R-M's (charcoal blue one 3 or 4 yrs old) had the problem you mention with the hand spring pushing the cylinder forward.  Shot fine with smokeless but would bind right away with BP.  Once I took some off the back of the barrel and bent the hand spring a little so it didn't push the cylinder as hard it will run all day with BP.