Originally Posted by
deldriver
I used the stuff about 6 or 7 years ago and had issues with it. Every time I shot the stuff, it left copper residue in the barrel till the point I had to take it to a gunsmith to see what he could do about it. He was able to clean the barrel up well enough to shoot the carbine again. He stated that he felt there was an issue with the bullet being possibly oversized in some way. I don't know if that was the real issue with the ammo, but it sure made sense at the time. I will add that the carbine I was shooting was an early Universal, possibly with a USGI barrel. I also still have about 200 round of the stuff left. I never shot it again after the incident.
I am not sure if the latest ammo is to spec, so maybe it's better stuff than what I used several years ago.