Hatsan The “0” Ring Wiggle

[OutdoorEDventure]

Apparently my lack of FPS was due to a missing “0” ring.
I replaced it with one that came with the gun (Flash RQE). My question: is it normal to have wiggle space?! Looks like 2 “0” rings could fit?

Also when I dry fired to release air pressure it started leaking from the rear when it got down to 20 or so pounds. Is this normal? I was told to always leave about 75lbs of PSI in the gun. This is my first time to depressurize the pew-pew.

Thanks in advance dudes

 

[Mrshosted]

That’s completely normal for the ring fit. Remember when the probe will crush the oring out, and needs some place to go. Generally the land is 20-40% bigger than the oring.

 

[PasadenaMike]

75 pounds? Why is it that low to begin with? It’s a 250 bar fill

 

[OneAcreFarmer]

The air rushing out once the tank is almost empty is normal. When the psi is so low, it can no longer hold the valve shut against the hammer spring.

 

[elh0102]

Maybe rifles vary in this respect, but none of my breech seals have any "wiggle room". They fill the groove. I guess it will still seal this way when the probe is pushed in, but it seems like it would result in premature wear.

 

[Peashooter]

The first thing anyone should do when a AG loose power suddenly is to put a hand around the magazine and then fire a shot, a dead breech O-ring should mean you feel a puf of air there.

Air leaking thru barrel is normal for FX as explained.
Also the recommended way to take the pressure off, remove air tank, and fire a few no load shots and the remaining air in rifle should leak out thru barrel / fire valve.

 

[OutdoorEDventure]

The air rushing out once the tank is almost empty is normal. When the psi is so low, it can no longer hold the valve shut against the hammer spring.

Thanks for helping the newbie.

 

[OutdoorEDventure]

The first thing anyone should do when a AG loose power suddenly is to put a hand around the magazine and then fire a shot, a dead breech O-ring should mean you feel a puf of air there.

Air leaking thru barrel is normal for FX as explained.
Also the recommended way to take the pressure off, remove air tank, and fire a few no load shots and the remaining air in rifle should leak out thru barrel / fire valve.

Yea. I knew something was up when velocities were low and I could feel “poof” of air shooting prone.