Originally Posted by
Jake190
Which trader in Poland did you use?
I have a phase one 1377 that I can’t get above 420 FPS on ten pumps, even after changing all the seals(except for the probe seal, which I could not find).
I’m having to put 6 pumps in it, just to cut clean holes in card targets at ten meters
So thinking of selling the phase one and replacing it with a modern 1377 with better velocity. Would prefer a brown gripped model rather than the all black models available in the UK. I think a modern one would only need about 3 pumps for ten metre paper punching.
When you say 'phase one' is the type with the sliding breech cover and cocking knob at the back end of the body?
If so, the one I used to have had a bleed/vent hole on the underside of the valve body, it was hopeless until I plugged it. Didn't have a chrono' back then, so don't know what change it made to fps, other than it was significant.
Too many guns, or not enough time?