I don't know why clear plastics are damaged, but the colored plastics are not.
Say what?
The dark green hopper on my RCBS Uniflo was rotted out in short order with powder left standing. Dillon hoppers have a slight blue-gray tint and hold up much better.
EEK!. I was thinking of the plastic bottles which powder comes in from the manufacturer.
Anyway, why does powder rot out some plastics.? Anyone know?