Thanks for the reply, air is not escaping, it's filled from a divers bottle, I have fired off about a 100 shots to see if the gauge on the air riffles knackered, it gone from 100 to about 50 on the gauge. Unless the gauge on the gun is knackard
If youve shot 100 and only used 50 bar then its very eco on air use. Now try filling with the gun cocked so the firing mech aint against the valve. It should fill.
PS is there any flow restricters in your whip? could any be stuck in the very small hole in the filler coupling? in there simplest form they are just small balls that block part of th