Two Prods...

[tefloncoated]

Here are two of my latest projects... Both share very similar mods as far as internals - extra heavy hammer springs, 5/32 TPs, heavy mods on the valve... Both are set up with red dots and both are intended for 10-30 yards. One is for plinking, the other is.. for heavy hitting plinking lol.

#1. A 13ci bottle conversion, regulated @~1400psi. Making 16+fpe with 25.39gr JSB Monsters. 100+ shots (?) from 3k fill. I don't know for sure how many, I got tired after 50 shots from 2500 down to 1800 psi lol. Very quiet for backyard plinking.





#2. A high power Prod, making 38fpe with 32.4 gr Eun Jins. 14 inch cut and re crowned .22 Mrod barrel, Lloyd's Double Tube, tapered probe. Two full mags from 3k to 2k psi. Boy this thing is loud. But the moderator takes it down a notch. Hits almost as hard as my regulated .25 Mrod @42fpe.

[AwesomeAnt]

Nice job on the double Mike!

Your bottle rod is super stealthy, i can attest. Great shooters Bro!

[tefloncoated]

Thanks man!

[FuzzyGrub]

Nice! Prods, you can't leave them just plain stock!

[tefloncoated]

You really can't, right? Lol, every time I said "I'm done!" - some other mod popped into my mind. Now this time... "I think" I'm done.

If anyone interested, here a little pictorial of the install.

https://www.youtube.com/watch?v=5BFw27EYLCM

And if someone hasn't seen the other thread, here is some shot data:
____

That Double Tube P-rod is a 2-in-1 lol. Check out this string, using 21.14gr Kodiaks:

Get two shots at max power settings (4HS 1/2HT) @35 fpe
Lower spring tension to 2HS, get another 22 shots @ 27-30fpe until you hit 1900psi...
Lower spring tension to 0HS, get another 15-16 shots @ 22-24fpe until you hit 1300psi...
All from the same fill, 2900psi



And here is the max power string, touching 38fpe:

HS 4
HT 1/2

start fill 3000 psi
end fill 2000 psi

Statistics/Velocity Report

String #: 1
High Velocity: 730
Low Velocity: 700

Average Velocity: 716
Extreme Spread: 30
Standard Deviation: 9
Grains: 32.4 Eun Jins


Velocity # Velocity Power Factor Foot/Lbs
1 700 22.680 35.249
2 705 22.842 35.754
3 711 23.036 36.365

4 717 23.231 36.982
5 716 23.198 36.878
6 721 23.360 37.395
7 726 23.522 37.916
8 723 23.425 37.603

9 730 23.652 38.335
10 730 23.652 38.335
11 727 23.555 38.020
12 721 23.360 37.395
13 716 23.198 36.878

14 718 23.263 37.085
15 708 22.939 36.059
16 700 22.680 35.249

[22synrodn]

Now you've got my attention. Very impressive string vs. power in a lightweight shooter. Nice bell curve too. I'm curious to how she groups at 25 yards.

[ksfastman]

Where did you get the stock that's on the double tube gun?

[tefloncoated]

Where did you get the stock that's on the double tube gun?

DIY stock

http://www.gatewaytoairguns.org/GTA/ind ... #msg853196

It's been modified a bit since, I've added a threaded sling stud.

[ksfastman]

Thanks for responding so quickly, that's awesome! Very clever!

[FuzzyGrub]

I like the shotgun foregrip. It gives the little carbine a better "feel" to it. The oem is too dainty for a carbine.