After everyone in the house settled I spent the last hour to hour and a half reading about the Nitro Piston/B19 barrel pivot/alive jam (chisel detent and rod/lock up) situation. I'm more lost now than before. Haha.1- It seems there were some design changes over the years, especially to the "alive jam". I've never seen a double chisel design, so I won't go there. BUT...2- How important is the chisel detent tension?3- If weak, will it cause vertical stringing? Then the pivot set up...4- Does the pivot bolt squeeze the forks together?...Or does the bolt only draw tension on the washers/barrel block to the threaded fork? (This would imply the bolt head only "nests" in the fork, mainly relying on washer fitment between forks to stabilize barrel and securing everything to the threaded fork)5- How important is the pivot bolt fitment through the barrel block? If loose or worn would this cause vertical stringing or is this not really important, relying on pivot washers and chisel detent?More importantly...6- As far as I can figure, the barrel stability relies on 80-90% of the pivot washers, the other 10-20% on the chisel detent and rod (alive jam). Is this about right? All I can say is... somehow this Prowler NP is fairly accurate with the plastic pivot washers. Luckily no detectable side to side play in the barrel and lock up seems solid. But after diving in deeply into the general pivot set up of the B19, it's apparent why other designs can stack pellets while these struggle to do so. Not saying it can't be done, but generally with MY Prowler, my groups tend to run twice as large than what I normally expect, especially from a fixed barrel springer. I'd still do pesting with this gun, but standing firm on limiting myself to 30 yards or so.
First, GRT trigger. Makes a good gun a great gun.I also use old pellets to add weight and stuff news paper behind it when I get the weight right. Sometimes you have to stuff a little paper in the front because some stocks have a hole into the trigger area.I have an old Gen 1 Swarm. I took the repeater part off. Didn't work right anyway. Then a friend installed a GRT trigger and replaced the gas ram with a steel spring. I just don't care for gas ram. Then I added pellets and newspaper to the inside the buttstock. Gun's a tac driver now.What you're doing now is pretty good shooting for that gun at 52 yards.Fun stuff.
I quickly swapped the Prowler's stock with the Fire (F4) stock. Now, aside from having added weight to the Prowler stock, I immediately noticed the Fire stock was really light weight. It's made much thinner than the one equipped on the Prowler, and it's very flexible in comparison. I did need to tighten the pivot bolt about 1/3 of a turn. What to call the Prowler in a Fire stock? I vote "The Benjamin Cougar", hehe.The big question, does a lightweight stock make a difference compared to a weighted one? Shooting test next.Here's the new set up: