since the stock hammer spring is super stiff and adjusting the tension did nothing but make my gun fluctuate up to 24fps between shots, i’ve tried softer springs with a spacer to try to make the tension adjuster work properly. it worked to give me room for a range of 700-775fps with shots differing under 14fps per shot.
i’m sure that, like everyone here, i wanted better.
after deciding to finally cut the original spring( half of a coil from both ends) i end up with 788-795fps spread. this is with the tension adjuster half a turn in from being fully backed out. i haven’t turned it all the way in yet because it’s in a pretty sweet spot right now. i also added a moly greased washer behind the spring between the threaded tension adjuster plug to help smooth out the spring compression and decompression.
now here comes the best part! see that little o-ring in the chamber? i changed it out with a slightly beefier one after feeling a little fart of air on my nose a few times when shooting the gun. after test firing it with the new o-ring… 795,795,793,792,795,795,795,792 FPS!
those last three 795 fps had me thinking my chrono was broken
. after using my crosman 1322 which i know is shooting 520-540 fps to confirm that the chrono is not broken.. 
i brought the notos to the chrono again and 795,795,794. is this what’s considered a tuned airgun is supposed to be like? this is awesome!
the o-ring on the left is the original o-ring inside the chamber and the o-ring on the right is the new one i installed.
sending CPHP 14.3gr
i’m sure that, like everyone here, i wanted better.
after deciding to finally cut the original spring( half of a coil from both ends) i end up with 788-795fps spread. this is with the tension adjuster half a turn in from being fully backed out. i haven’t turned it all the way in yet because it’s in a pretty sweet spot right now. i also added a moly greased washer behind the spring between the threaded tension adjuster plug to help smooth out the spring compression and decompression.
now here comes the best part! see that little o-ring in the chamber? i changed it out with a slightly beefier one after feeling a little fart of air on my nose a few times when shooting the gun. after test firing it with the new o-ring… 795,795,793,792,795,795,795,792 FPS!
those last three 795 fps had me thinking my chrono was broken
. after using my crosman 1322 which i know is shooting 520-540 fps to confirm that the chrono is not broken.. i brought the notos to the chrono again and 795,795,794. is this what’s considered a tuned airgun is supposed to be like? this is awesome!the o-ring on the left is the original o-ring inside the chamber and the o-ring on the right is the new one i installed.
sending CPHP 14.3gr
