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Thread: 41 Colt mold ???

  1. #1
    Boolit Buddy
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    41 Colt mold ???

    I received a great amount of vintage reloading equipment . Some of it is molds. This one particular mold is from the Ideal company. Not sure what year, but vintage for sure. It is a cast iron block that has been drilled our & re-poured with a brass inner. Then chambered. Attachment 307731Attachment 307732Attachment 307733Attachment 307734Best I can tell it is a 41 cal. I guess for the 41 Colt. An help you gurus can provide would be appreciated.Attachment 307735

  2. #2
    Boolit Buddy
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    Whatever it may have been, that is not currently a mold for a .41 colt. I have both a hollow-based and a heel-based mold for .41 colt and they look nothing like that.
    Bill

  3. #3
    Boolit Master smkummer's Avatar
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    I agree with above, not 41 colt. Generally the first 3 numbers is diameter….449
    Oops, I see it was remade with brass.
    Last edited by smkummer; 12-07-2022 at 09:53 AM.

  4. #4
    Boolit Master


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    Quote Originally Posted by smkummer View Post
    I agree with above, not 41 colt. Generally the first 3 numbers is diameter….449
    It is not a factory made mold, the original cavity was removed and a new cavity was cut.

  5. #5
    Boolit Buddy
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    Whoever cast the brass & chambered this mold knew what they were doing. Strange

  6. #6
    Boolit Buddy
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    I used my inside caliper on the back edge of the closed mold. It read .408.

  7. #7
    Boolit Buddy
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    .41 Colt does not use a regular bullet like 38-40, or 41 Mag. The original .41 Colt loading looks like an over sized 22 rimfire with a heel based bullet.Click image for larger version. 

Name:	41-colt bullets.jpg 
Views:	15 
Size:	137.0 KB 
ID:	307773. See the loaded cartridge and bullet on the left side of the image. Later loadings used a hollow based bullet like the one on the right.
    Bill

  8. #8
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    It was very common for a gunsmith or experimenter to recut or recherry an existing bullet mould to some new design he needed or thought would be the latest&greatest. If the original cavity was smaller than the new one, it would clean up to the bigger size. If it was too large, he’d drill it out and fill it with braze, insert a brass sleeve, or even braze in an iron sleeve.

    This way, essentially all he’d need was to grind the cherry, spin it in a drill press and bring the blocks together around it. The mortises for handles, the holes, threads, screws and sprue plate would be there already, so he was saved that extra work.

    Somebody used to advertise somewhere that the iron moulds he routinely lined with brass and recut cast better than the original iron moulds. IME, I can’t say that that was mere advertising puffery.

    If that is .41 caliber, it may be for a .38-40, a Herter’s Powermag or one of those early .40 caliber wildcats Gordon Bozer and others were working on. What diameter does it cast at?

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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