Prod upgraded!

[RatRacer]

Yes, I'll be doing the push test to check the resistance vs. The stock barrel and mrod barrel. I won't be getting to it until the weekend though. I need a better set of allen wrenches, t-handles. I gotta order my mrod barrel next, since I have the ext. already and maybe a chrony too. Holiday onset and wife's surgery keeps eating away time and money.

[darryl]

I ran a small test tonight indoors at 9.5 yards. I used three different pellets on one fill; the first pellet (H&N FTT)  was also the last one, for four magazines. The picture explains. I'm good with it, and I see that even the Mrod barrel likes a pellet with a bigger head.
darryl

[RatRacer]

Their barrels are hit and miss too. Mine does fine with CPHP's from a tin @ 30yds. Lucky me, I guess.

[darryl]

hi RR,
I know well the furor caused by Crosman releasing so many "hit-or-miss" barrels on an unsuspecting public. So I think I'm lucky too. Jay and Gary did polish my barrel for me before I installed it. I can only think that helped. Jay even found a burr at the port hole, and no doubt it would have wreaked havoc on accuracy by deforming pellets.
Check this discussion out and look at Steve's pistol: http://www.network54.com/Forum/79537/thread/1320441561/How+long+%27should%27+a+P-rod+airtube+extension+be-

Awesome piece.
darryl
BTW when will we see your pistol with the new barrel?

[darryl]

hi Guys, I need your analytic powers to review this test I ran on the P-rod with that Marauder rifle barrel and the 0/093 TP. I hope it posts large enough to be read.
darryl
ooooohhh that's tiny

[rsterne]

The discontinuity in your graph is confusing.... something weird happening there.... If I can read the pellet weight, its ~14.6 gr?.... That would be ~16 FPE @ 700 fps?.... Looks like the max is about 735 fps, so I personally wouldn't even record any shots under ~660 fps (10%).... or 700ish if I'm being fussy.... Looks like the gun goes over 700 about shot 14 and drops below it again about shot 39 (if we ignore the blip).... That would give you 25 "good" shots at ~ 17 FPE average.... which seems pretty good for the reservoir volume on a PRod.... Beyond that I can't give you much based on the information I can get from squinting at your chart....

Bob

[darryl]

you can't see that chart?
 

[darryl]

btw, the drop in FPS was due to a pellet jam, and I had some minor issues clearing it: wound up with two pellets in the barrel, and shot them off. It happens. Other than that, I'm pleased with how this little project turned out.
Oh! hammer spring and throw are both at max. Probably need to add the Disco spring just to have some adjustment capability.
darryl