P15 25 cal owners question

[badgerfarm]

Tweeter,  the P12 and P15 take different size regs.  I'll just order one from Huma since I'm almost certain that the reg is acting up some.  Of course some of it is probably me too not used to shooting such a light bullpup.   Has anyone done any work with the striker spring in theirs and found the sweet spot on the reg?  Also what diameter is your transfer port?  I'll find out when I get into mine but I was just curious.

[miksatx]

Has anyone done any work with the striker spring in theirs and found the sweet spot on the reg?  Also what diameter is your transfer port?  I'll find out when I get into mine but I was just curious.

Yes and 5.5mm TP.

[stony30]

...

[stony30]

stony30, chrony a definite need to determine how the regulator is working.

Ok thanks

[stony30]

Has anyone done any work with the striker spring in theirs and found the sweet spot on the reg?  Also what diameter is your transfer port?  I'll find out when I get into mine but I was just curious.

Yes and 5.5mm TP.

Stock is 5.5 ? I thought you had to drill yours out to 5.5. Did you end up buying that P15 in .177 after all?

[miksatx]

Has anyone done any work with the striker spring in theirs and found the sweet spot on the reg?  Also what diameter is your transfer port?  I'll find out when I get into mine but I was just curious.

Yes and 5.5mm TP.

Stock is 5.5 ? I thought you had to drill yours out to 5.5. Did you end up buying that P15 in .177 after all?

No stock TP was 4.45mm. badger ask what diameter is my TP. Hence the 5.5mm. No P15 .177 yet.

[stony30]

Did enlarging the tp to 5.5 make a difference?

[miksatx]

Did enlarging the tp to 5.5 make a difference?

It made some difference. But twicking the reg higher, bigger TP and shimming the spring didn't net me the 900+ with jsb 25.3 I was shooting for.  Next time I shoot it down I'll cc the plenum with a reg on it.

[miksatx]

Only has a 10cc plenum.