Cylinder question

[Kmrere42]

HI,


What is the best way to equalize the diameter of the freebore space at the end of the chambers of my single six.  I just had the barrel replaced on my 32h&r SS and the new barrel is slightly larger than the cylinder.  Also the different chambers are slightly different from each other.






Paul

[44 Man]

As long as the barrel bore lines up with the cylinder throats, don't worry about the barrel outside diameter.  On the cylinder, do you mean that the clearance between the barrel and cylinder varies as the cylinder turns?  If that is so, you should have someone true the face of the cylinder.  Or as long as it is not binding, it's not a big deal.  If the cylinder throats (bullet exit diameter) vary from one to the other, a good gunsmith could polish them all to the same bullet diameter.  Then use cast bullets that are the same or .001 or .002 larger than the throats.  Enjoy that gun.  .32's are fun guns!  44 Man

[Kmrere42]

Hi 44 Man,


I kinda misspoke.....   The grove diameter of the barrel is  .3125 - .313 while the diameter of the chamber throats is around .312 - .3125 thus the bore is slightly larger than the chamber.  I would like to make the chamber throats even at .313.






Paul

[Lee Robinson]

So...if I understand this correctly, your cylinder is 1/2 of one thousandth of an inch smaller in diameter than the diameter of your barrel? Sounds ideal to me, but I am not a gunsmith. Center it and you won't have any bullet shaving as it enters the barrel. If you have them the same size and it isn't alligned perfectly you could end up with the bullet being shaved on one side it would seem to me...causing accuracy problems with the bullet ending up smaller than the barrel. Having it fit tight should help with accuracy by following the riffling.

[jd45]

You want your chamber throats a maximum of .001" larger than your barrels' groove diameter, & no more, ideally. Cylindersmith.com will do it for about $40. jd45