Well I would try to blame it on ball hop, but it shouldn't be getting any since it's force feed. Where is all the paint from the broken balls at. If it's in the feedneck and chamber, then it's probably the bolt breaking them. If the paint is all over the inside of your hopper then it is breaking in the hopper, though I wouldn't know why.
WRATH LEGION-SILVER DIVISION -SPECIAL FORCES-PSYOPS
The realist in me regularly smacks my paranoid aspect around and tells it to stop being so retarded.