[patrickusaf08]

i have an ollie lang dm9. its sucking down air like crazy. ill get maybe a hopper and 3 pods out of a 68/45 fill. its not leaking. does anyone know anything that may help me in my problem. any help would be welcom thanks.

[okitoki]

have you checked if your bolt stem orings?

take your bolt out, with the bolt still assembled, cover the rear hole on the back cover and try to pull or push the bolt... it should have a slight suction... if it moves easily without resistance, then you need to chance the orings.

[cdhayes2]

You should also check the oring on the brass adjuster in the LPR.

[patrickusaf08]

ya it has suction and the lpr o ring has been changed about 3 or 4 cases ago.

[cdhayes2]

1. Dwell at 18-21 *21 for Brittle Paint*
2. Make sure your HPR is set at 145psi (use a HPR tester to be precise or turn screw the adjuster all the way in then turn it out 3.5 turns which should roughly be 145psi)
3. Turn your LPR all the way in until you start to feel some resistance. As soon as you feel it start to resist stop turning in! DO NOT GO ALL THE WAY IN! You will end up shredding the oring and losing efficiency.
4. Turn the LPR out 2.5 turns. (This is roughly 70-80 psi)
5. Chrono it.
6. Adjust LPR to increase consistancy over the chrono
7. Adjust HPR for FPS.

Hope it helps, if not, let us know! Good luck!

[JSkew113]

you can start by replacing the bolt stem and the outer orings on the backcap.

make sure there are no leaks/venting coming from the lpr/noid. you can take the body off the frame, and air up, and make sure you don't have any small leaks.

if you are using an overly large bore barrel, you can lose efficiency to the excessive overbore.

you can dwell tune, to make sure you have the lowest dwell setting you can get