.44 Spl cases. Some have a ring set into the case wall.

I've not run into that with Starline, Winchester, nor R-P cases in .44 Special, Pond, but have found it in 9mm, though I don't recall the make. I discard any that I find, not knowing how the internal capacity, hence pressure is affected. I'm curious too.

On a personal note, I've read your avatar location and wondered what language(s) you speak there? If this is prying, write it off to an old man's curiosity and disregard.

Best Regards, Rod
 
It how MagTech (and others) establish the factory crimp on lead bullets.
No big deal. When reloading, just treat/crimp like any other case.
 
If you look at the position of the factory cannelure on the case, and compare it to the seating/shank depth of the bullet,
you'll see that it actually crimps into the side of the bullet itself -- preventing movement backward OR forward on recoil.

Again, reload/mouth-crimp as normal from that point on... ;)
 
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I've not run into that with Starline, Winchester, nor R-P cases in .44 Special, Pond, but have found it in 9mm, though I don't recall the make. I discard any that I find, not knowing how the internal capacity, hence pressure is affected. I'm curious too.

On a personal note, I've read your avatar location and wondered what language(s) you speak there? If this is prying, write it off to an old man's curiosity and disregard.
Click to expand...

Starline doesn't have it, only my Magtechs. I thought it might have been a historical feature linked to BP levels. Clearly not!!

On a side note, this is brass bought new, unprimed, not fired factory ammo.

On the personal note, Estonian (A Finno-Ugric language) is the official language, although Russian is pretty ubiquitous for obvious reasons and, as such, certain members of the population haven't lifted a finger to learn what is the language of the land, despite growing up there!! (Rant over)

English is pretty current amongst the younger generations too.
 
As has been said, that ring (cannelure) is to keep the bullet from sliding deeper onto the case. The one drawback to the ring is after the brass has been resized a time or three, the ring gets ironed out and the case has stretched to a point that the shell can be over crimped. Other than that they can be reloaded like any other brass. Just check and do an occasional trimming.
Paul B.
 
Pond, I completely misunderstood your initial post. I thought you were referring to a sort of shelf with in the case head, used evidently to beef up the portion just above the extractor groove. I agree with other posters that the external canelure was used to prevent bullet set back. I have many cases that display that mark, and so long as they are from the same manuf. they shoot with in the group with the rest of the cylinder or magazine. Sorry for the confusion. Rod
 
Revolver bullets don't get set back in the case unless in a tubular magazine Instead they pull out of the case on recoil.
The case/cannelure digs into the side of the bullet shank to prevent both push & pull.
 
Mehavey, you are absolutely correct sir...I stand corrected. Went down to my loading shop and looked over some .45 ACP brass that had canelures and that, I think brought the set back comment to mind, but only for bullets feeding in an auto pistol.

The only set back possible with the OP's situation would be come from recoil when loaded in a tubular magazine rifle...Marlin's 1894's for instance. His hand gun should not be so effected.

Too, I had never noticed that the crimp/canelure actually impacted the bullet...always assumed it was at the base so as not to deform....I learned something today.

Good catch...Best Regards, Rod
 
I sort cases, the ring helps when sorting cases. Then there is the effect firing has on the case when it conforms to the chamber. Meaning if an internal ring had a purpose it may not be there after I pull the trigger. If there is an internal purpose I could apply the ring from the outside.

Then there are artifact left on cases.

F. Guffey
 
That cannelure ring won't hurt your cases functionality at all. Don't throw them away. They get ironed out from reloading them and start to disappear.

Nothing to worry about.
 
Then there are artifact left on cases.
Click to expand...

I have read many times the firing pin strikes the primer and then everything including the bullet, powder case and primer takes off for the shoulder of the chamber. Then there is that thing about head space as in the difference in length between the case from the shoulder to the head of the case (clearance ) and the length of the chamber from the shoulder to the bolt face: and too much of it will blow your gun up.

Many years ago I ask “How can that be?”, remember, I was asking myself. So I placed artifacts on my cases then fired them. For me it was a very small matter of deductive reasoning, if what was claimed/believed to be true why didn’t my artifacts move?

We do not want the bullet to seat deeper in to the case, we have little to no control on how store purchased ammo is treated/handled before we purchase it. We do not want the bullet to seat deeper when another round is fired. I want all the bullet hold I can get.

F. Guffey
 
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It is only on my Magtech cases, but not my Starline.
Click to expand...

My wife received her conceal to carry permit; I had her shoot everything thinking there was a chance there was something she would like. We decided on an S&W model 10 revolver; the next option was a Model 29 S&W.

On the day of her test the instructor started with: “WE do not have anyone that is going to qualify with a revolver. DO WE!?” That put us in a bind; she would be using a P89 with my ammo. I could not get her to stiffen up her grip, meaning the cases would not clear the slide. The instructor loaded the P89 with his Magtech, which solved all the problems with cycling the pistol when fired. There was nothing suspect about the Megtech ammo. She did not like the recoil.

F. Guffey
 
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