None -- they're just going to break in there anyway.
Extremely brittle in cold weather, poorly made
One cold day, I was using this product (cheap field paint) -- it was a very bad day. First, I have an anti-chop eye that works on black shells. Second, I only had one break in the breach, and It was not a chop -- the ball just collapsed.
60+% of the balls broke in the barrel or immediately upon leaving the barrel. Apparently the air pressure (I dialed it down to 240) was too much for them. After trying everything in the world to figure out why my barrel was filling with paint (but the breach area was absolutely clean), I tried the ultimate test. It tossed one on the ground, and it easily broke. Hmmmmmm. I DROPPED one from waist high and IT BROKE!!! I then noticed that 50+% of the balls would break from a mere drop. The weather was in the low 40s, so it was chilly, but not bad.
A close review of the balls showed that they just looked like crud. I dumped the rest of the case out on the ground and called it a day (I needed to clean all the goop from the breaks anyway.
The WORST paint I have ever heard of, much less used. Just say, "NO, NO, NO -- GET AWAY FROM MY YOU CURSED PAINT FROM HELL!!!!!!"
I wish I could give a negative number, but 1 is the lowest allowed . . .