There is no minimum weight but they cannot weigh more than 3.5 grams.
2 lbs. 2 oz
ASTM International Standard F 1979 - 04, Standard Specification for Paintballs Used in the Sport of Paintball,specifies in requirement 3.3 that paintballs shall not weigh more than 3.5 grams. There is not a minimum weight requirement.
The weight depends on the gun, you can get little cheap guns that weigh less than 5 pounds and can get as large as real firearms and weigh over 15 pounds.
No, paintball co2 is much higher pressure.
Paintball hurts MUCH more than airsoft. The reason that Paintball hurts more than Airsoft is because the speed of the paintball is faster and the mass is also larger. Take an Airsoft BB and a paintball and look at the difference in size. Now, when you figure that Paintball markers have much greater speed than an Airsoft gun, you will find that Paintball will and should hurt more.
.291 Newtons and 13.06 joules, enough to need a paintball mask.
a case of paintballs weighs about 16 pounds. There are 2000 paintballs in each case plus about 1 pound of packaging. 1 paintball = about 4 grams
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Proto is a division of Dye, much like Chevrolet is a division of GM.