Has anyone here ever applied a cannelure to the case, such as a .45 acp?

I can think of a few good reasons to have one. I'm just wondering if anyone here has done it and if it is practical or doable.

If the loaded round is properly crimped, what would be the few good reasons for applying a cannelure to the case ?

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Has anyone here ever applied a cannelure to the case, such as a .45 acp

Since the ACP headspaces on the "mouth" using a cannelure wouldn't make much sense to me. With a proper crimp I would leave well enough alone.

"Since the ACP headspaces on the rim......"
Say what???????

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"Since the ACP headspaces on the rim......"Say what

Hey it was late. I know what I meant to say but when you get to be my age what is in the head doesn't always make it to the fingers to type.

Had rim of the case mouth in my head but that didn't make it to my post.

Thanks for catching it.

To the CASE??? What would be any good reason for doing that?. Not to mention that there is no reason for it to be on a 45 acp bullet either.
The rim of the case mouth; you are good. No issues with our old brians.

I don't know about your old brian but my old brian needs all the help it can get.

Cannelures and grooves have been, and may still be, applied to factory cases. This is to prevent the bullet setting back upon feeding. If you are reloading, your sizing die should size the brass sufficiently to negate this need.

Yes, they still are applied on some factory ammo; most of my 45 ACP factory rounds have it but my point is, totally unnecessary for the handloader.

I have the excelent CH Cannelure Tool and have cannelured both jacketed and lead bullets. I have also cannelured cases. Yes!

Three rings of cannelure, at the base, on dummy rounds so that there is no doubt. I also red painted the primer pocket.

455 Webley cases used to be cannelured as the bullet wasn't crimped in by a roll crimp but held in by the cannelure. On military cartridges this was a :stab" crimp of three indentations. On commercial ammunition it was by a cannelure into the second lube groove from memory.

Others used to cannelure 9mm to stop the bullet setting back inside the case. So this cannelure was done o make almost a lip inside the case for the bullet base to rest on.

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Originally posted by Joe from So. Cal.:
Has anyone here ever applied a cannelure to the case, such as a .45 acp?

I can think of a few good reasons to have one. I'm just wondering if anyone here has done it and if it is practical or doable.

do you mean crimp? bullets generally the groove, not the case

Most 45 acp military ammo has a crimp in the case to keep the bullet from setting back since they can't crimp on the mouth. I figured that is what he meant; might not be.

To prevent bullet set-back.

I understand case tension holds the bullet. I've also read somewhere here that some folks throw away their (thin) Remington brass. Being cheap, I don't really want to do that.

When I'm firing off a string at a target I've never stopped and checked to see if any of my reloads are being set back into the case, although I may do just that next time out.

Also, the cast slugs I'm using are from Bear Creek Supply and they're tumbled in moly or something, makes them quite slippery.

Finally, I don't usually case trim my plinking stuff. 45 acp headspaces on the mouth of course, but some think it actually is supported by the extractor. I try to taper crimp as light as I can but I've noticed that some of my reloads may start to wedge past the chamber due to a less-than-square case mouth and a taper crimp into the cannelure of a cast lead pill.

A fresh case has a nice, square mouth resulting in positive headspacing. Truthfully I have not had any misfires with my play stuff. I was just wondering what the consensus here is.

My advice would be to load, shoot and forget about everything else; that is what I do with all pistol ammo. No trimming, squaring, (crimp on revolver loads only). Keep it simple. I have never had bullet set back. I personally think that the crimp evolved from military loads so they will feed from submachine guns. I know, some other pistol rounds have case crimps too, so no hate mail please.

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My advice would be to load, shoot and forget about everything else; that is what I do with all pistol ammo. No trimming, squaring, (crimp on revolver loads only). Keep it simple. I have never had bullet set back

+1

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I've also read somewhere here that some folks throw away their (thin) Remington brass.

A friend gave me some thin Rem. brass once because his sizer would not reduce them enough. I used my die and applied a taper crimp, and had no trouble with them. I was using them in a S&W mod 25 and they head spaced ok. I was not using 1/2 moon clips.

Years ago the American Rifleman magazine published an article regarding reloading the 9mm Luger cartridge. Their findings were that bullet 'set back' occurred with (only) Winchester brass regardless of the amount of taper crimp and a heavy cannelure had to be applied to the case of the reloaded round to prevent bullet 'set back' This has mirrored my experience thus all of my range pick-up Winchester 9mm Luger brass gets deprimed and sold to the recycle center with my other scrap brass. No big deal because I have access to plenty of other brands of brass.

Absolutely! Revolver crimps are a must; pistol crimps are a matter of choice, to a great extent. Can't think of any reason for cannelure on case or bullet. Properly set seating die is all that matters.

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Originally posted by dpcd:
My advice would be to load, shoot and forget about everything else; that is what I do with all pistol ammo. No trimming, squaring, (crimp on revolver loads only). Keep it simple. I have never had bullet set back. I personally think that the crimp evolved from military loads so they will feed from submachine guns. I know, some other pistol rounds have case crimps too, so no hate mail please.

I've seen 38 Special brass that has a cannelure about mid case. At one point I knew why but can't remember now. Maybe it keeps the case diameter small to assist extraction.

quote:

Originally posted by dpcd:
My advice would be to load, shoot and forget about everything else; that is what I do with all pistol ammo. No trimming, squaring, (crimp on revolver loads only). Keep it simple. I have never had bullet set back. I personally think that the crimp evolved from military loads so they will feed from submachine guns. I know, some other pistol rounds have case crimps too, so no hate mail please.

Pretty much what I do right now.

Thanks for the reinforcement.