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  #1  
Old 03-30-2009, 09:39 PM
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.45 ACP in .45 Colt die?


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I have a set of .45 Colt dies from a few years back. Never have owned a .45 Colt, but wondered if they would work for the .45 ACP? Seems to size O.K. My buddy needs them if they'll work. He's on the verge of starting up a reloading bench.
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  #2  
Old 03-31-2009, 02:09 AM
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Short answer: I dunno.

My two concerns would be getting the bullet seated to the proper OAL (will the die adjust down far enough?) and getting the taper crimp right (same issue).

Based on the similarity to loading 38spl with 357 dies, I'd be willing to try it just out of 'satiable curiosity, but I wouldn't bet on it working.
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  #3  
Old 03-31-2009, 03:17 AM
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It ain't gonnna work... There's a big difference in the two cases, and the crimp, well most .45 Colt dies have a roll crimp. Look at the diagrams in your loading manual...
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  #4  
Old 03-31-2009, 10:13 AM
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One thing's for sure, a .45 ACP case will never reach the crimp ring in an unmodified .45 Colt seater die, 'sides the crimp would most likely be a roll crimp and not a taper as commonly used for the .45 ACP. Same would apply to bullet seating. Might be able to make do with the expander die if it will reach the casemouth. Your friend's best approach would be to obtain a .45 ACP die set. Would suggest he go with the carbide sizer while he's at it.
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Old 04-02-2009, 08:29 AM
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I was under the impression that crimping was optional on the .45 ACP. Anyway, I think I'll just sell the .45 colt set and get myself some components I've been wanting. I looked at the price of die sets and they have certainly gone up since I bought my last set. Thanks for the replies.
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  #6  
Old 04-05-2009, 09:44 AM
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You'd better TAPER crimp it!!!

[QUOTE=unclepaddy;420369]I was under the impression that crimping was optional on the .45 ACP. QUOTE]


Greetings,

You'll find that you do need to crimp the .45 ACP. There are two types of crimp: A roll crimp, and a taper crimp. The roll crimp is like with the .45 LC and other revolver rounds: It rolls the metal at the end of the case over into the bullet.
A taper crimp basically squeezes the cartridge to a certain size along the sides. It doesn't affect the end of the brass like a roll crimp does.
For a .45 ACP and other cartridges that depend on the brass at the end of the case to headspace on, you need the taper crimp. A roll crimp may and probably will allow the cartridge to not headspace or function correctly.
I'm with folks on the .45LC: It is a LONG cartridge compared to the ACP: Most likely, you won't be able to get the dies to work correctly on the much shorter .45 ACP even if you could taper crimp them in that type of die set.
By all means sell the set and get the proper one.
+ 10 points for wondering if you could economize by using the .45 LC die set.

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  #7  
Old 04-07-2009, 04:39 PM
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Noooo don't sell your dies.

You need to buy a new handgun in .45 Colt!
Or a lever gun in .45 Colt.

That is how we solve your problem!

Buy gun, no problem.
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Old 04-07-2009, 04:44 PM
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Hey UnclePaddy....Mr. MMichaelAK is dead righ on there, go find yourself a .45 LC sixgun, you won't be sorry....and a lever in the same is a hoot....
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  #9  
Old 04-07-2009, 05:48 PM
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no-go,maybe

The nominal dia of a 45LC case is .480 dia, while the 45ACP is .473, according to the Speer manual. Unless you have an exceptionally tight LC sizer, its an iffy situation. I have a LC and an ACP and just now, out of morbid curiosity I tried a sized LC case in my ACP chamber checker and it fit! Snugly, but it did fit. It is at the upper end of the tolerence range for the ACP. Sized dia of the LC is .475 in my Lyman carbide sizer and in the ACP is .469 in a Lyman carbide sizer also. Unless oversize cast bullets are used, lack of sufficent neck tension might be an issue plus an occasional failure to feed if there is a speck of fouling in the chamber.
Issues as bullet seating and crimping that were raised in previous responses would still hold true. As you wisely deceided already, getting the proper die set is the way to go. Just adding my 2 cents. Good luck!
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  #10  
Old 03-16-2011, 09:35 PM
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I'm surprised nobody said that they used 45 colt dies for 45 acp. Lots of people do this. I just bought some 45 colt dies so I could start reloading both with them. Beats having to buy extra dies for no reason, and many people do it.
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  #11  
Old 03-17-2011, 12:32 AM
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Welcome to ShootersForum, Romansten9. I think you'll find this is just about the friendliest and most informative gun site on the web.

There are thousands of registered users on this site, with many logged on during the busiest of times. None of them stepped forward to claim that they use 45 Colt dies to load for 45ACP, so I have to question whether or not "many people do it".

The 45 Colt measures .480" at the base and mouth; it is a true straight-walled case originally meant for revolvers where feeding a round into the chamber is done while loading the gun. The 45ACP measures .476" and the base and only .473" at the mouth; it is tapered as it was designed to be used in an auto-loading pistol, where a straight wall would make feeding less reliable.

Even if your 45ACP chamber is sloppy enough to feed cases that are .007" too large at the mouth, it is not likely to do so reliably and accuracy would go out the window. Worse, it is possible for the action to cram an over-sized case into the chamber, pinching the brass down on the bullet. When fired, this can lead to an over-pressure situation.

Long story, short -- Buy and use the correct dies for any round with a tapered case. Save the multi-use dies for straight-walled combinations, like the 460/454/45Colt and 357Max/Mag/38Special.
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  #12  
Old 03-17-2011, 06:54 AM
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I think the issue will be the seater/crimp die, not the sizer. I have RCBS dies for both and as far as I can tell the sizers are nearly identical.

You could seat .45 Colt with an ACP seater and give it a slight taper crimp. But I would not be able to crimp a .45 ACP with my .45 Colt seater. Other brands may vary. In fact I had to cut down the .45 Colt seater just a tad to get it to work at all in one of my presses.

Odd, perhaps, but that's what I have.
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  #13  
Old 03-17-2011, 08:33 AM
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Why donít you just buy the right tool for the job? A 3 die set by Lee only cost $30.
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  #14  
Old 03-17-2011, 02:23 PM
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The Hornady die sets for 454 Casull, 45 Colt and 45 ACP all include the exact same seating die (a very good one, I might add). The Hornady seat/crimp is a "variable" crimp that will taper crimp at first, but if you crimp a little more, it will roll crimp. It can be very touchy getting it set right for taper crimp. If you are going to use a separate taper crimp die anyway, then there's absolutely no problems with it for either cartridge. It roll crimps while seating very nicely.
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  #15  
Old 12-27-2011, 05:45 AM
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Good advise Broom_
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  #16  
Old 08-17-2014, 05:28 PM
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Of course you can reload 45Colt with 45acp dies, how do you guys think I loaded these 45 Win mags, duh, with my 45acp dies.
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  #17  
Old 08-17-2014, 05:32 PM
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You guys are all knuckleheads, well, most of you guys. LOL
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  #18  
Old 09-18-2014, 03:18 PM
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Quote:
Originally Posted by unclepaddy View Post
I was under the impression that crimping was optional on the .45 ACP. Anyway, I think I'll just sell the .45 colt set and get myself some components I've been wanting. I looked at the price of die sets and they have certainly gone up since I bought my last set. Thanks for the replies.
Nope, .45acp should be crimped.
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