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Never trim .45 brass?







Dr. Marneaus

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#1
Is this true? I dont dabble in these fancy auto loading cartridges....but I just got some .45acp dies.

For my .38spl loads I have always run my "unknown" brass through a trimmer. I figure if i knock it all back to at least the same length (or not cut them, as some are slightly short), it gets a consistent starting point for the roll crimp. Nothing will end up being over crimped. Also I use a lee quick trim and it chamfers/deburrs at the same time. After subsequent firings i at least check a random sampling of brass length to ensure none or only very few need trimmed. Typically dont have to trim them much after that.

This is what I figured I'd do on 45acp too, manily from a paranoia standpoint, but people are like "I never trimmed a .45acp in my life! I shoot em til the headstamp dissappears and the case splits, then I get new ones!"

Is this protocol for straight wall case mouth headspacing calibers? Don't even need an initial trim/consistency check? Clean, decap prime load and go, forever and ever and never check?
 

MAC702

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#2
I don't trim my revolver stuff, either, but if I used them for bullseye matches or something, I would to get that perfectly consistent roll crimping, like you say.

And no, I'll never trim a 45 case, and I've got cases that have no doubt seen DOZENS of firings.
 

Dr. Marneaus

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#3
I don't trim my revolver stuff, either, but if I used them for bullseye matches or something, I would to get that perfectly consistent roll crimping, like you say.

And no, I'll never trim a 45 case, and I've got cases that have no doubt seen DOZENS of firings.
So, tumble and load the .45 even though I dunno what it is or where it came from?

On the revolver stuff I only ever do it the first time since so much of it is unknown and its all different headstamps etc.
 

MAC702

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#4
Headstamp, headschtamp.

If they are visibly dirty, I might even clean them first, spent primers included!
 

MAC702

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#5
I knew a guy that would only load 38 brass with the double knurled ring. He didn't shoot any better than anyone else.
 

Dr. Marneaus

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#6
I knew a guy that would only load 38 brass with the double knurled ring. He didn't shoot any better than anyone else.
I dont sort it, I just trim it the first time so it all might as well have a "MARN" headstamp.

Only stuff I've sorted by headstamp is the .50AE.
 

Dr. Marneaus

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#9
Just run it until it jams the machine, yank it out and curse, and move on like the rest of us.
I dont have a fancy machine. I use a single stage and a hand primer. So, I guess I could just start loading smol pp's and they just wouldnt stick in the large pp holes. and I could sort them that way. Or I could drink a beer and sort.
 

MAC702

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#10
If you are using a single-stage, just look at it during the same motion that loads the shellholder in the priming tool.

I do put all the SP 45 in a bucket and eventually load it. When I was doing a lot of USPSA, I would purposely use that ammo at a lost-brass match.
 

Dr. Marneaus

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#11
If you are using a single-stage, just look at it during the same motion that loads the shellholder in the priming tool.

I do put all the SP 45 in a bucket and eventually load it. When I was doing a lot of USPSA, I would purposely use that ammo at a lost-brass match.
But that motion is normally when I sip my beer.
 

gene(10)mm

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#13
I don't trim my .45 brass, I do mic them to make sure they don't fall below the minimum length. I run all my revolver brass thru a power trimmer. I have a couple of those with the rotating thingy. I like a uniform crimp.
 

tdyoung58

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#14
The only "special" thing I do is use a 4 die setup .... 3 die setup gave me feeding issues in better quality guns.

CCI primers, 6.0 of Bullseye, 200g flat nose lead