have one major problem with transfilling - those little tanks that go on the guns are only rated to 2000 psi or so, and a transfill from an AL80 is downright dangerous without significant care (and gauges!)
Note that those tanks do NOT have burst disks. The first notice you get of an overfill is a BOOM!
I have some friends who paintball, and they are also divers. I have pointed out the danger to them, but many of them use a cheapie $20 adapter that has no overpressure protection nor any gauge to do the transfill, and start with a full 3000 psi tank.
Some day one of these guys is going to blow himself up. I'm sure as hell not filling his tank.
Note that those tanks do NOT have burst disks. The first notice you get of an overfill is a BOOM!
I have some friends who paintball, and they are also divers. I have pointed out the danger to them, but many of them use a cheapie $20 adapter that has no overpressure protection nor any gauge to do the transfill, and start with a full 3000 psi tank.
Some day one of these guys is going to blow himself up. I'm sure as hell not filling his tank.