Decoppering agents have been around for a long time,
I used to think decoppering agents in powder was just a farce or a new marketing tactic etc.
I found out I was wrong, some powders with decoppering agents work and work amazingly well.
Recently I was doing load development on a new 6ppc barrel, I used the same cases,primers, bullets on all loads so the only difference was the powder. I used the tried and true VVN133,the new Accurate LT-32 and IMR8208XBR.
To make a long story short VVN133 and Accurate LT-32 would leave a trace of copper with a single shot down the barrel and with as many as 30 shots down the barrel the IMR8208XBR left absolutely zero copper !!!!!! amazing
N133 has been around forever but it makes me wonder why Accurate did not use a decoppering agent in the LT-32
