32" P-rod Carbine NEW FPS/FPE 4/14/11

Made possible by Jim (Marmot_Militia). PM him for details on
how he can customize your P-rod.

Note why the butt stock mod ($35 from Jim) on the P-rod MUST be extended…

I was impressed with the perfect screw in/screw on shroud adapter and moderator attachment fit.

32″ long with collapsible stock, 26″ with folding stock. (on order)

4X Bugbuster scope with extended mount from Pyramydair.

200 Lumen tac light held on with barrel band and Weaver mount.

P-rod requires bolt travel relief built into butt stock mod as indicated in the picture.

The shroud extender can also be configured for any screw on/in muzzle modification of your choice. Or, you can just extend the shroud. It makes a big difference on the muzzle report.

Too dark now for chrony results. I’ll get it out tomorrow and report back. I might even screw in the grub screws on the butt mount and line up the tac light to center on the crosshairs of the Bugbuster.

26″…that fits under my truck seat, and nicely low in my boat. Hmmmm…

Later….

Hoot 😯

Thursday 4/14/11

REVISED 4/14/11

Started at 3000 psi, but quickly learned the P-rod, with factory settings, a full fill is NOT a good idea. FPS and accuracy was all over the place.

Filled to 2500 psi JSB 18.1 Heavies. Managed to get consistent results. When it gets down to 1100 to 1000 psi, the drop off in accuracy, poi, and trajectory is substantial. I found I can load to about 2700 and get three full mags (24 rounds) at good power and accuracy. Given the small tube and the larger pellets I was using, I am more than satisfied. I will begin to slowly and carefully adjust the hammer spring and valve duration to see if I can get the numbers up in the 700 FPS for the 24 shots I want.

(2600 psi fill)
FPS………FPE
1) 663 17.67
2) 667 17.69
3) 674 18.26
4) 677 18.43
5) 685 18.86
6) 692 19.25
7) 695 19.43
8) 700 19.70
9) 693 19.25
10) 696 19.47
11) 696 19.47
12) 679 18.53
13) 676 18.37
14) 677 18.43
15) 650 16.98
16) 648 16.88
17) 629 15.29
18) 612 15.06
19) 611 15.01 (Stopped here at 1000 psi)

Too much wind today to get accuracy, but did manage to get the group all on a 1″ bullseye at 20 Meters. I’ll dial it in later in the week and post measurements.