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

Thanks, that explains it all. Good while it lasted but not worth the money. David.

I can still sign in and my pics are all there. I have not paid either. I looked at the 510 strip down which others can see but I can't. On some other posts I can see the images, but not this one. David.

I can't see the pics on some pages ,only get the P500 signs. What am I doing wrong. I have a Photobucket account.
David.

Thanks for that Alan. It has 5 months of warranty left but I think I'll get it started. When you say the power adjuster do you mean the hammer spring tensioner or the side screw over the transfer port? David.

After a drop I would like to remove the barrel to check if its straight. Its newish with the rose bud shroud and AT'd all over.
Is it 2 top grub screws or is there 1 underneath as well? Will it be glued in? David.

Try it with Bisley magnums at 21grains. See what that gives. Then worry if it's well over 12ft/lbs. David.

Now have one, thanks.

Cylinder, That's what you get when working in the dark. David.

I need an air cylinder and gauge to fill my s410. What have you?
Also looking elsewhere. David.