Quality time with my Marauder Pistol

jfrazier30: Tell me a little more about your Prod. This is on my short list.
1. Other than the extension air tube, have you done anything to it?
2. If so, what have you done.
3. What pellets does it like?
4. What do you fill the air tube to?
5. How many shots do you get having the extra tube?
6. How many shots did you get when the Prod was stock

Killzone: What pellets are you using? Have you tried others to help out your grouping?
 
I've tinkered with my Prod quite a bit actually.

1. It has a larger transfer port.
2. Heavy hammer spring and Depinger from Hill
3. Jim Gaska shroud
4. BStaley o-ring mod. (to eliminate hammer bounce)
5. and of course, the Double air tube kit from Lloyd at Airgun Lab. (This was one of the very first prototypes.

The gun shoots the very best with the H&N FTT's in the 5.53 head size. It also likes Polymags. I fill it to about 2500 and shoot down to around 1800 psi. Here's a string from last weekend

Polymags - 16 grain.

1
674
676
674
676
679
682
683
680
Av:678
Spd:9
Dev:3 

2
691
695
695
(chrony missed a couple shots)
697
695
Av:694
Spread: 6
Dev: 2

3
697
695
694
696
693
694
694
694
Av:694
Spd:4
Dev:0

4
692
690
688
686
685
686
682
680
Av:686
Spd:12
Dev:3