Usually you won't engage at ranges over 25–50 meters if you have a carbine, so most carbines will do about 50–100 meters depending on the velocity of the BB and the angle at which it is shot at. On the other hand, sniper rifles are usually more powerful and will shoot the BBs at higher velocity.
Is 330 fps good for an airsoft gun?
Is 330 FPS good for an airsoft gun? - Quora. If we're talking about a pistol (as a secondary), then yes, 330FPS is sufficed. 330 - 350 is the norm. If we're talking about a pistol (as a secondary), then yes, 330FPS is sufficed.