Nothing involving those letters should be trusted.
Grizz
A friend of mine and I each bought several cases of the CBC ammo. It came in brown, press paper boxes of 20 rounds each and the boxes were marked "REENGASTADA" which roughly translates to recrimped or re inserted.
This term was used for reloaded ammunition a lot on South America.
All of the crates my friend purchased contained a mixture of dates. The CBC 75 was printed on the box and if memory serves, on the outside of the crate with lot numbers.
He was shooting a K98 that had been used as a base to build a match rifle. I don't remember how many rounds he shot, but it was at least a few hundred, before he had the KABOOM. It was a nasty Kaboom.
He ended up with a bit of brass in his eye. Luckily the 98 bolt is built for such occurrences. The shield on the shroud deflect most of the bits but the stock was cracked and the bolt was frozen in the receiver by the brass that had flowed around the locking lugs.
International Firearms out of Montreal, sold us that ammo. It was cheap. They paid for his rifle and a damage claim for his eye.
All of the ammo I purchased was from a different lot, with different date stamps and all were the same date, 76. I wanted to be reimbursed for mine but they said my lot # was safe.
This is the CBC/Century notice.
CBC, 7.62MM X 51MM CALIBER CARTRIDGES
RECALL: It has come to our attention that CBC 7.62mm x 51mm cartridges from lots dated 1975 may pose a serious safety risk. The specific cartridges in question bear the headstamp "CBC 7.62 75".
We hereby provide written notice to you that a potential hazard may exist with respect to outdated CBC 7.62mm x 51mm cartridges. There is a reported risk that such cartridges may cause excess pressure upon discharge and could result in serious bodily injury or damage.
Under no circumstances should these cartridges be used, given to anyone, or sold.
There have been isolated reports of rifles bursting as a result of excessive pressure in what appear to be these outdated CBC cartridges. An independent testing lab reports that it detected a peak pressure that they estimated to be in excess of 130,000 CUP in one out of a batch of 20 outdated CBC 7.62mm x 51mm cartridges dated 1975 that it tested.
CBC 7.62mm x 51mm cartridges are manufactured solely for military use in several nations around the world. CBC has not exported or sold any of these cartridges to or in the United States. These particular cartridges are not intended for civilian use under any circumstances.
In addition, a warning is issued for any CBC 7.62mm x 51mm cartridges from any year that bear a label on the packing material with the Spanish word "reengastada". That label was not affixed by CBC, and its application to ammunition is not yet clear.
Anyone who has, or believes they have, CBC 7.62mm x 51mm cartridges from lots dated 1975, or CBC 7.62mm x 51mm cartridges from any year with the word "reengastada" on the packing label should immediately contact the dealer from whom they bought the rounds, and call the following toll-free phone number:
(800) 742-1094
CBC/Brazil
Hope this helps
I eventually did what Ganderite suggested and pulled all of the bullets. Unlike Ganderite, I just threw the powder into a burn pile. At the time, I wasn't sure what would happen if I mixed it in with other ball powder. Ganderite once mentioned that when fast powder was mixed with slow powder. I don't remember it completely so I won't speculate.
It wouldn't bother me one bit if a small amount of a fast powder got mixed with a large amount of slow powder or vice versa. The thing is, I don't know enough about the effect the mixed coatings would have on the burn rate/pressure