A reusable ball is a rubber substitute for a paintball, but is often used when describing Reballs and other brands of reusable paintball-sized spheres. Most reusable paintballs are the same size as normal paintballs, but weigh less and do not contain a paint filling. They do not break open to leave a paint mark on players, so the lack of filling makes them practical for indoor locations where accumulation of paint from broken paintballs would be a problem. This fact also makes this form of paintball questionable, since no mark of paint is left, it allows players to cheat much more easily. A Reball is more expensive than a paintball, but since they can be cleaned and reused many times, they potentially have a lower cost per use. Some paintball parks have added dedicated reball fields, and some fields have actually gone exclusive with Reballs, eliminating the use of paintballs entirely. The primary use of Reballs, as intended initially by the manufacturer, is as a practice aid for teams who wish to save money by using reusable ammunition. Other manufacturers have created similar products, such as the V-Ball, a Velcro (hence the name V-Ball) reusable paintball. Reballs are also used at a lower velocity because of their inability to break on whoever they hit. For example, a Regular paintball will normally be shot at approximately 300 ft/s (91 m/s), but a Reball is supposed to be used at around 250 ft/s (76 m/s).
The term 'reusable balls' does not refer to paintballs that have been picked up from the ground. This 'loose paint' should not be used in a paintball marker, as groundwater or condensation may have swollen the paintball, which could cause a jam in the barrel, or rupture and foul the internal workings of the marker।
