Ok, first let me say that I have used this lube with good results on double ended wad cutters.
I had a large quantity of HBWC at a good price. But they leaded the barrel. They measured .357" with very little lube.
So I tried my trusty LLA/Johnson tumble lube on 20 of them. I left them dry over night and loaded them up.
The next trip to the range they shot well and no leading! So I tumble lubed the remaining bullets left them dry for about a week
and loaded them up. Now, 2 years later 90% of them shoot well but the other 10% are under powered to the point of tumbling at less than 25 yards. They go through the target broadside. Yes I check the barrel to see if the bullet made it out.
I pulled the bullets from a sample of them and found that some of them had the powder caked in the hollow base of the bullet.
Maybe the lube that got in the hollow base of the bullet still had some residual solvent left in it and over an extended time contaminated the powder charge? Rounds that I loaded before and after with the same primers and powder, yes I record everything,
but with double ended cast boolits the same week are 100%.
The good news is that I only have 2,000 of them left. The bad news is I have 2,000 of them left.
What say you?
Dave C.