Twist Rate?

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    Gordon

    Ultimate Member
    Feb 20, 2011
    1,133
    Baltimore City
    Going to have a barrel re bored from a .50 cal to .54 cal. It's a T/C Renegade with a 27" barrel. What would be a good twist be for round ball?
     
    Mike

    Mike

    Propietario de casa, Toluca, México
    MDS Supporter
    Oct 15, 2014
    3,698
    incommoding in MD ☭ Sector 8; Gulag 3
    Doco Overboard

    Doco Overboard

    Ultimate Member
    Jul 22, 2016
    7,896
    The heart of the Delmarva Penninsula
    Get the slowest twist you can for the rebore 1:60 but depth of rifling could be more important. Narrow lands and shallow grooves .006-.010. so you dont rip patches up. Number of grooves comes into play as well but nothing that is not easy to find for decision making on the web. You asked for a RB barrel only.
     
    Last edited:
    Uncle Duke

    Uncle Duke

    Ultimate Member
    MDS Supporter
    Feb 2, 2013
    11,723
    Not Far Enough from the City
    Doco Overboard said:
    Get the slowest twist you can for the rebore 1:60 but depth of rifling could be more important. Narrow lands and shallow grooves .006-.010. so you dont rip patches up. Number of grooves comes into play as well but nothing that is not easy to find for decision making on the web. You asked for a RB barrel only.
    Click to expand...

    This.^^^

    Your rifle is currently a 48 twist, which was intended as a compromise twist. It was meant to enable your rifle to shoot patched round balls as well as the TC Maxi Ball or Maxi Hunter conicals, and either with hunting accuracy. But if your intention going forward is patched round ball only, you're likely better served with the slower 60 twist.
     
    4570inMD

    4570inMD

    Western MD Hooligan #007
    Jan 26, 2011
    1,339
    West Virginia
    My Thompson Center Arms Pennsylvania Hunter flintlock (32") shoots patched balls very accurately with a 1:66 RH twist rate.

    My Mark Bond Underhammer uses a 1:70 RH with patched balls and is very accurate with a shorter barrel (26.5").

    I support the guidance already given.

    4570inMD
     
    G

    Gordon

    Ultimate Member
    Feb 20, 2011
    1,133
    Baltimore City
    Hello John,

    Bobby Hoyt is doing my barrel, he quoted me about $125. I told him no rush as he's booked about a year out,he said these type of jobs fill in between the more expensive runs so about 2 weeks. Hope this helps. It was a real pleasure to meet Bob. Awesome shop.
     
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