Air Arms Owners Club

Hallo everyone, first post from a new member,
I have recently brought an air arms 400 .177, a private second hand purchase and my first pcp, ( previously only owned springers ), however when I refill it the pressure goes up to approx. 150 bar and stops, is this right or is there a fault, ?
other than this the gun is fantastic and I,m very happy with it

What pressure is in the Scuba tank? If you don't know or don't have a blanking plug to find out, have it refilled anyway.

before you take it for a re-fill check to see if its still in date.
Fill to 180 for a flat power curve, re-fill at 110. 75 to 80 shots.
David