If by med speed you mean the average speed, the average speed of a paintball shooting out of a barrel of a paintball gun is usually around 260-300 FPS. That is, if the gun is working properly. most fields only allow players to have their guns shooting at around 280 FPS, because shooting any higher than that can hurt somebody. The average field speed limit is around 180 MPH.
most markers have a capable range of 250 to 330 fps. however 300 fps is the international speed limit. You cannot shoot faster then that in any official game. most fields dont even allow you to get that high, they keep you around 280fps
All paintball fields force a strict rule of no higher than 300-350 FPS. About the speed of Airsoft.
8 is fine for mechanical. 15 is more then you will ever need unless you play in tournaments a lot.
All paintball guns shoot between 280 and 300 fps.
Almost all paintball guns will shoot 300 fps.
First, Pellet guns don't shoot rubber balls, they just shoot pellets. But I know what you are asking. I believe you are asking about RAM (Real Action Markers) paintball guns. These guns shoot a .43 caliber paintball or Rubber ball, not the much larger .68 caliber paintball that is associated with Paintball games. RAM guns are used for training by the police and other agencies. They feel just like a real firearm and even have blowback when fired. Umarex co carries a line of RAM guns. See the link below.
No. Paintballs are much MUCH larger than airsoft pellets (.50-inch and higher), the guns' feed mechanisms are completely different.
A regular BB gun can not shoot air-soft pellets. BB guns shoot a .175 BB. Air guns shoot a much larger 6MM BB.
Anywhere from 18 to 35 shots is normal on most paintball pistols.