Velocity loss - Air Arms S510 .25

[bdzjlz]

I have an Air Arms S-510 that has been great with absolutely no issues. This morning, I took it out to shoot in +/- 40 degrees. It shot its usually great. As I had several other things to do, I left it outside for three or four hours, and then went out to shoot it, and it had a noticeable loss in velocity, even after I hooked it up to my Air Venturi 200 bar regulated tank.

I brought inside in front of the fire place for a couple of hours, and took it back outside, and it still has significantly more drop and a noticeably quieter report than it did earlier this morning, at full charge.

Is it possible that by leaving it out in the cooler temperatures that I damaged a seal or something?

 

[Glem.Chally]

Do you have a chrony? At first reading i figured maybe some lube got thick somewhere, but you say its been warmed up and still the same.

Id verify first that its shooting slow then guess o-rings at the top of the list.

 

[bdzjlz]

Thanks! I plan to put it on the chrony in the am and if it is low, send it to Air Venturi for a check/up 

 

[Wadcutter]

Check your power adjuster knob. They are easily turned on some rifles.

 

[John "spysir" Blount]

And make sure you hammer/striker is running dry on the rod & tube.



John