Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

reaming a 45 acp to 45 colt..is this possible

Discussion in 'Gunsmithing and Repairs' started by usedjean, Feb 17, 2013.

Thread Status:
Not open for further replies.
  1. usedjean

    usedjean Member

    Joined:
    Jan 29, 2006
    Messages:
    6
    Location:
    VA
    I have a ruger newmodel blackhawk with a 45 acp cylinder, someone tred to ream one of the bores in cylinder. other five are 45 acp, can it be bored or reamed to do 45 colt. Is it safe?

    and who could do this work, on a workin mas budgit.

    Thanks Edward:banghead:
     
  2. rcmodel

    rcmodel Member in memoriam

    Joined:
    Sep 17, 2007
    Messages:
    59,082
    Location:
    Eastern KS
    Yes, the .45 ACP is .480" at the rim, tapering to .473" at the case mouth.

    The .45 Colt has a ..512" rim with a .480" chamber all the way though to the chamber throat.

    Who can do it?

    Any decent gunsmith with a .45 Colt chamber reamer should be able to do it.

    rc
     
  3. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,752
    On the Ruger, the .45ACP cylinder lets the case head fit flush at the rear. In other words, there is no room for the rim of the .45 Colt cartridge, so either the reamer has to include a countersink or the rear of the cylinder has to be faced off.

    Jim
     
  4. rcmodel

    rcmodel Member in memoriam

    Joined:
    Sep 17, 2007
    Messages:
    59,082
    Location:
    Eastern KS
    All .45 Colt, or other straight wall revolver caliber reamers I am aware of will cut the case head recess if necessary.

    Thats how the headspace / chamber depth is set when you ream the chamber in a close fitting revolver cylinder, or barrel in a rifle.

    rc
     
  5. Jim K

    Jim K Member

    Joined:
    Dec 31, 2002
    Messages:
    17,752
    I had an old .38 Special reamer at one time that didn't cut the recess, but you are right, all the ones I have seen since do. I guess I was trying to cover all the bases.

    Jim
     
Thread Status:
Not open for further replies.

Share This Page