Originally Posted by
kash2001
OK not a huge amount of luck with this as its now doing 215m/s about 705 fps with a 8.3g pellet so that's 9.16ftlb. The pellet receiver breach is still letting air out, even after the seals from Lawrie (thank you again) maybe not so much but enough to push a piece of paper about a foot into the air!
The cylinder to barrel I relocated and aligned with a slightly bigger tougher seal in place, which was a really good fit, a small amount of air does still escape between the barrel and pump cylinder, but not as much as I'd noticed before 👍
I'm guessing that's where the extra 15m/s came from, as I couldn't get it past 200m/s previously.
So I know it's a stupid question, but is some air escape normal? Or should the paper remain in place on the breach and cylinder 🤔
I've adjusted the pump arm to get maximum power from it, it holds in place when fired and locks fine when pumped without stress on the rod. It's letting off after 7 pumps, as I'm using a innova internal pump rod as the webley one couldn't be adjusted much.
Would the power issue be down to the port hole being too small as I really would like to get 10.5 ftlb out of it to be happy, I'm at a lose with the T Robb guide to hand it's just not getting close to 10ftlb and air still escapes.
I'd happily buy a 22 as this should get to 10.5 but the 177 just seems stuck at 9ftlbs and air leaks 😭
Any thoughts or advise welcome on the delima.
Atb