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Thread: Re-barrel Marlin 45 Colt

  1. #1
    Boolit Buddy
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    Re-barrel Marlin 45 Colt

    I have a Marlin 24" 45 Colt which I really like but it is blessed with a grossly over sized chamber and I have been toying around with the idea of having it re-barreled or may be cut back and re-chambered. I was wondering if any one else has done something similar and if so who did the work and were you happy with the results
    Jerry

  2. #2
    Boolit Grand Master Nobade's Avatar
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    Can't cut them back because of all the dovetails and such, but rebarrel to either 45 colt or 38 or 44 WCF would work fine.

    I have one of those rifles as well, and just shoot it with .457" bullets. I made a bigger expander ball, and only "neck size" the cases. Doing this, the large chamber isn't a big deal and it is super accurate. My ammo looks a bit strange, like a 44 wcf, but works great.

  3. #3
    Boolit Master


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    Having rebarrelled several Marlins for a faster twist, it would probably be to your advantage to sell/trade at a gun show and start all over again with a new Marlin and hope for a better chamber.

    You're looking at barrel cost here plus fitting and chambering and dovetails are about $25 each these days and then there's wood fitting and blueing.

    By now, we're talking $500 in parts/gunsmithing.

    The good side is that you end up with what you want./beagle
    diplomacy is being able to say, "nice doggie" until you find a big rock.....

  4. #4
    Boolit Master
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    i agree with beagle it's real pricey to rebarrel a marlin levergun. cause they have alot of work to do, it's not as easy as boltgun. there is a shank and the extractor groove to be cut, plus cutting the threads. adds up quick. you could sell the gun or trade it for somethin' else or live with it, or spend the coin and barrel it.

  5. #5
    Boolit Master
    Bullshop's Avatar
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    Wanna sell it or trade it ?

  6. #6
    Boolit Master Mumblypeg's Avatar
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    Quote Originally Posted by Nobade View Post
    Can't cut them back because of all the dovetails and such, but rebarrel to either 45 colt or 38 or 44 WCF would work fine.

    I have one of those rifles as well, and just shoot it with .457" bullets. I made a bigger expander ball, and only "neck size" the cases. Doing this, the large chamber isn't a big deal and it is super accurate. My ammo looks a bit strange, like a 44 wcf, but works great.
    I got one also. I shoot boolits sized to .452 but man the chamber is big. I neck size as well, looks like a 38-40. It does shoot good though.
    Experience is the source of all knowledge.

  7. #7
    Boolit Master
    Jon K's Avatar
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    Reline the barrel.
    Col 2:13-17

  8. #8
    Boolit Master

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    jwhite, check your P.M.'s
    The way is ONLY through HIM.

  9. #9
    Boolit Buddy hickstick_10's Avatar
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    bore out chamber for a sleeve, then rechamber? Its such a low pressure cartridge (unless your feeding it ruger fodder) that it probably work just fine
    Last edited by hickstick_10; 04-06-2010 at 02:34 AM.

  10. #10
    Boolit Buddy
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    I have been neck sizing for this rifle for a while and every time I look at the funny looking cases it gets me thinking about re-barreling, I have lived with it for this long I guess I will just keep it the way it is unless I stumble into a pile cash. I really like the rifle and it shoots just fine now so it would hard to justify spending big money to re-barrel it. I did look at David Clements site last night just to get a rough idea of cost and it shook me back into reality, though I would love to send that rifle to him. I did order one of new Ranch Dog 45 Colt group buy molds and am looking fwd. to trying it out soon.

    Thanks for the info,
    Jerry

  11. #11
    Boolit Grand Master


    missionary5155's Avatar
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    Good morning Jwhite
    As mentioned above Get a chamber throat measurement and use the proper diameter boolit.
    My 44-40 SRC Winchester rounds look near straight wall cartriges. They are .433 in diameter and they shoot fine.
    Until I got a mold of proper size down here I used my bench vise to Sqeeze .428 bullets up to the near proper size then pushed them through a reamed piece of 3/8 pipe to size then. They shot surprizingly well out to 70-75 yards. But them by the time they get to the muzzle they have been barrel swaged to .429.
    Everone should start life with a muzzleloader. You learn real fast to fill the bore with a snug fitting projectile. And today is no different. Undersize cast boolets propelled by smokeless powder just are not going to be accurate.
    "Behold The Lamb of God that taketh away the sin of the world". John 1:29
    Male Guanaco out in dry lakebed at 10,800 feet south of Arequipa.

  12. #12
    Boolit Master
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    Quote Originally Posted by Jon K View Post
    Reline the barrel.
    Good idea.

    Not as expensive as rebarreling and you can change twist etc. if that is wanted.
    Knowledge I take to my grave is wasted.

    I prefer to use cartridges born before I was.

    Success doesn't make me happy, being happy is what allows me to be successful.

  13. #13
    Boolit Buddy
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    Don't remember where I came across it but I read that the chambers are oversize to allow the cartridge to feed smoothly. I have had 2 rossi and two Marlins that seemed to be very large as compaired to my revolvers.
    Brian

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check