Cor Bon High Velocity .45ACP brass question - The Firearms Forum

WildcatFan · 02-26-2010, 05:44 PM

I picked up a box of 20 of these boogers and I see the brass has what appears to be some cannelure-lookin' rim about halfway up the brass. What is this? Why is it there? Will these be reloadable? If so, what can I expect them to look like post-resizing during reloading.

Thanks, as always.
Alex

JohnTheCalifornian · 02-26-2010, 06:24 PM

I have seen the same thing on Magtech brass in 45 ACP. I reloaded them without any problems. Only reason i can think of them to be there is some sort of crimp they apply to the case.

Insulation Tim · 02-26-2010, 09:22 PM

It maybe purely cosmetic to justify the price.

Alpo · 02-27-2010, 12:58 AM

Back in the day, cases were filled with black powder, and the bullet sat on top of the case-full. It could not go deeper into the case.

Nowadays, with smokeless powder, you don't use a full case. It is possible for the bullet to be pushed deeper into the case. I have a small collection of factory and reloaded ammo (mostly 9mm and380) that the bullet nose would get caught on the loading ramp, and the slide shoving it forward made it quite a bit shorter than the others.

Some ammo companies put a cannelure in their case, to make a ledge for the bullet base to sit on. This helps to prevent bullet set-back. Generally it is done with the older rounds - stuff that was originally loaded with black. MagTech's 45 Colt rounds are a great example. You've got, probably 3/8 of an inch of airspace between the powder and the bullet base. So the bullet sits on that little lip.

WildcatFan · 02-27-2010, 08:41 AM

Thanks.

02-26-2010, 05:44 PM	#1
WildcatFan V.I.P. Member Join Date: Aug 2009 Location: St. Louis Posts: 68	Cor Bon High Velocity .45ACP brass question I picked up a box of 20 of these boogers and I see the brass has what appears to be some cannelure-lookin' rim about halfway up the brass. What is this? Why is it there? Will these be reloadable? If so, what can I expect them to look like post-resizing during reloading. Thanks, as always. Alex __________________ These are the times that try men's souls. The summer soldier and the sunshine patriot will, in this crisis, shrink from the service of their country; but he that stands it now, deserves the love and thanks of man and woman. Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph. -Thomas Payne- -->

02-26-2010, 06:24 PM	#2
JohnTheCalifornian V.I.P. Member Join Date: Jun 2009 Location: Bakersfield Posts: 432	Re: Cor Bon High Velocity .45ACP brass question I have seen the same thing on Magtech brass in 45 ACP. I reloaded them without any problems. Only reason i can think of them to be there is some sort of crimp they apply to the case. __________________ Im not a complete idiot.... parts are missing

02-26-2010, 09:22 PM	#3
Insulation Tim Advanced Senior Member Join Date: Oct 2008 Location: Ohio Contributor Posts: 2,300	Re: Cor Bon High Velocity .45ACP brass question It maybe purely cosmetic to justify the price. __________________ Tim *"Remember the Ark was built by amateurs....Professionals built the Titanic"*

02-27-2010, 12:58 AM	#4
Alpo Advanced Senior Member Join Date: Feb 2007 Location: NW Florida Posts: 8,662	Re: Cor Bon High Velocity .45ACP brass question Back in the day, cases were filled with black powder, and the bullet sat on top of the case-full. It could not go deeper into the case. Nowadays, with smokeless powder, you don't use a full case. It is possible for the bullet to be pushed deeper into the case. I have a small collection of factory and reloaded ammo (mostly 9mm and380) that the bullet nose would get caught on the loading ramp, and the slide shoving it forward made it quite a bit shorter than the others. Some ammo companies put a cannelure in their case, to make a ledge for the bullet base to sit on. This helps to prevent bullet set-back. Generally it is done with the older rounds - stuff that was originally loaded with black. MagTech's 45 Colt rounds are a great example. You've got, probably 3/8 of an inch of airspace between the powder and the bullet base. So the bullet sits on that little lip. __________________ Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297 I always take precautions. Beware the Evil Bullet Fairies.

02-27-2010, 08:41 AM	#5
WildcatFan V.I.P. Member Join Date: Aug 2009 Location: St. Louis Posts: 68	Re: Cor Bon High Velocity .45ACP brass question Thanks. __________________ These are the times that try men's souls. The summer soldier and the sunshine patriot will, in this crisis, shrink from the service of their country; but he that stands it now, deserves the love and thanks of man and woman. Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph. -Thomas Payne-