WTS Ruger Blackhawk 357 Cylinder

[kywoodwrkr]

Would like to sell a Ruger Blackhawk 357 cylinder I consider to be in good condition for $125 shipped in US.
Payment methods:Check(held for clearance), USPS MO and PayPal F/F.
Feel free to ask questions. no charge for those
This cylinder is not doing me any good and maybe someone really needs a clean one.
Basic cylinder data:
Length = 1.956 Caliper
Chamer Ln = 1.641 Caliper
Ratchet Ht =.1533 CMM* Average of 4 points
Front Ring =.1670 CMM* Average of 4 points
Coordinate Measuring Machine* Pictures are from while it was on CMM
Originally measured above measurements with vernier caliper but decided it was not accurate enough.
Can obtain more measurements if needed Monday Feb 12,2024.
Would consider trading for other Blackhawk cylinder whose chambers are buggered up.
We could discuss trading parameters, ie. shipping and possible difference in value.
Small trade premium paid for good carbine cylinder(will keep me from trying to make one)
Any and all questions and comments welcome.
Discussion use PMs.
thanks







Couple additional photos of sides.

[Tatume]

Old model or new model?

[kywoodwrkr]

Thanks for clarification question.
Typically OM chamber length .357 are in range of 1.60-1.62.
NM in 1.64 to 1.65.
Overall length OM 1.860, NM 2.000
addendum: OM 357 Cylinder Dia 1.67, NM 357 Cylinder Dia 1.73
Above are per Kuhnhaussen Shop Manual 2003
thanks

[kywoodwrkr]

Additional pictures added and additional commentary.
thanks

[RICHP]

What is the diameter at the ratchet end? I believe that is the main difference between the new and old model.

[kywoodwrkr]

Ratchet Diameter is from two measurements(4 points ea):
.6118 and .6119
Rear pin hole diameter is .2520
Front pin hole diameter is .2529
Front boss diameter is .4326

[contender1]

Actually,, the more critical dimension differences is the length of the cylinder boss from the face of the cylinder. The OM's have a "short" boss,,,, and the NM's have the "long" boss.
It's not the diameter,, nor the length of the actual cylinder. The ratchet is pretty much the same on both the OM's and the NM's.

[RICHP]

I guess my question in my first post was not to clear. My question was what was the cylinder diameter? I do not believe a new model cyl will fit an old model frame. The one I have will not

[kywoodwrkr]

Finally got home and can measure cylinder, sorry for the delay.
Vernier caliper value is 1.730.
Will try to verify tomorrow morning with CMM.
Will also do mouth of chambers if time allows.
thanks
Diameter of cylinder at ratchet end =1.7291 CMM
Diameter of chamber fronts are:.3595,.3595,.3596,.3598,.3597 and .3596

[kywoodwrkr]

Thanks one and all.
Cylinder has gone to a higher calling.
Going to use it in shop project.
thanks

[kywoodwrkr]

To experiment!

[Der Gebirgsjager]

Moved to CD.

DG