loading 45 long colt with 45 acp dies
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loading 45 long colt with 45 acp dies

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Old 05-14-2012, 05:52 PM   #1
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Default loading 45 long colt with 45 acp dies

I already have 45 acp dies and I want to start reloading for my buddies S&W 25 in 45 long colt. Is it possibly to use 45 acp dies to load 45 long colt? I know I'll need a different shellholder, but other than that would it be possible?
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Old 05-14-2012, 07:29 PM   #2
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I'm fairly certain that the .45 LC is too long to work properly in .45 acp dies. Whether you could "make it work"? Well, I suspect the results would be unsatisfactory. If nothing else, the .45 LC will need a roll crimp & .45 acp is typically taper crimped. With new Lee Die sets under $40, I don't see the need to force the issue.
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Old 05-14-2012, 09:49 PM   #3
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no. 45colt is waaaay to long to work in the 45acp dies.
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Old 05-14-2012, 10:06 PM   #4
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If i am not mistaken, arent 45 colt .458" and 45 acp .451??

I would think this would be another issue to go with the case length issue.
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Old 05-14-2012, 10:21 PM   #5
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Post war 45 colt is .452 pre war is .454. WWII that is.
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Old 05-15-2012, 12:30 AM   #6
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" Is it possibly to use 45 acp dies to load 45 long colt? "

Maybe but I doubt it. The problem will be the sized & expanded diameters, not the length. Don't have my manuals at hand to confirm that tho, you can look it up yourself.

The question of crimps will be how hot you load them, hot loads will need a roll crimp but moderate loads won't care.
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Old 05-15-2012, 01:14 AM   #7
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You could expand and seat. You could even use the taper crimp if you load light. But you can not use the sizing die. The 45 colt is too long. You would only be able to size part of the case. It would be to large down by the rim of the case. It might work the first time. But after that you would have trouble with getting cases stuck in the cylinder. I would invest in the dies if I were you.
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Old 05-15-2012, 02:49 AM   #8
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Even though you couldn't fully resize the 45 long colt case it would probably still work work ok for you. Depends if it is for a revolver if all the chambers are about the same size(they are never exactly the same). If it is for a rifle then I doubt you have problems.
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Old 05-15-2012, 04:31 AM   #9
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The S&W 25-5 shoots the .454 LSWC better than anything else. The 25-5 tends to key hole with .451 & .452 bullets. The .454 is to large for the ACP seating die.
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Old 05-15-2012, 05:36 AM   #10
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The sizing die probably won't be deep enough to let you deprime a .45 Colt case.

I suppose you could put a decapper out of a rifle die in a .45acp die and make it work, but then you might as well just get the proper sizing die.

Last edited by Sport45; 05-15-2012 at 05:39 AM.
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