worr paint was okay, I bought it because it was all they had at my local field, though I much rather prefer karnage paint.
it dosent matter.
anything that is the same bore size as the paint and is accurate, because then you won't really get the best performance.
the paintballs are durable, but WILL break when shot.
Will get oily if stored in a bit(9 degrees)above room temerature.
iv'e started shooting karnage about 3 months ago and iv'e had not that many problems with them. It will break every time you fire, the balls are a a perfect size, not too big, not too small, the balls are always perfectly round, and they are nice and accurate when fired out of a .689 size barrel.
The only problem i can think of is that if they are stored in a room, that is just a little over room temperature, they will become oily which you do not want because it will screw up your barrel and not perform as good(being less accurate and gunking up your barrel).
Over all Karnage is an excellent paint, it is reliable and shoot with great performance, i would recommend it to any player because of the above and it is not too pricey either(around $27.00 for 1000 rounds)