I thought Blazers were OK. So I bought a few bricks. Then I noticed severe accuracy issues with a 22 that had no accuracy issues prior. I looked down the bore, and saw blotches. I ran a bore brush down there and literally chunks, yes chunks of lead came out of the bore. This had never happened before. I immediately put the Blazer away and tried copper plated rounds. The problem did not resurface. I now have almost 2 full bricks of Blazer that I will not be using again.
I suspect it was oddly soft lead or something. No other brand of pure lead ammo has done this, nor have I ever had the problem with copper washed/plated bullets.