bstaley tune for Prod?

[nickE10mm]

My current tune gets me about 24 shots (within 4%) 14.5fpe with a 24 shot AVERAGE of 655 fps with the 5.53mm variant of  H&N's FTT (~14.8gr weight). I have it recorded as to how my hammer tension and throw are set but let's just say that that's the most power for the most number of shots I've been able to squeeze out of my stock gun.  (With that said, buy stock I mean stock transfer port stock springs etc.. since I had a Hill 5.5" moderator initially and am now rocking an extended, baffled shroud by Rocker1, wish not only keeps the size and visual profile down on my gun, but has resulted in better accuracy and quieter audible report by a shade. (super quiet is how I roll!)

The numbers you're stating you're getting with your very slight mods and bestaley mod have more or less given me to go ahead to go ahead and get that set up for myself to boost my shot camp and power numbers just a bit. I'll probably also open up my transfer board sometime soon thereafter

Thanks!

[BC81]

I dont have Prod, but a 2260 with a Prod hammer and trigger, 10 inch barrel with .045" hammer spring and .156 ports. It gets 16 shots on a 3000 psi fill for 22 fpe with 18.13 jsbs. 4 o rings behind valve, spring fully turned in just shy of bind, and the striker extended about 3/16"
Turned down to get 24 shots it is around 17 ft/lbs. I have one of froggys 8 shot breeches on it, so it's basically a DIY Prod lol.
It did take some tweaking to get it set like this, but I would think the Prod would be able to get higher power with the longer barrel and more efficient valve.

[JimD]

Nick,

I ordered several transfer ports from Crosman before I started drilling them out.  They are not expensive and it made me feel better that I could always go backward. 

Jim

[nickE10mm]

10/4..

I used to work on and shoot 1322s quite a bit so im already well familiar with the whole transfer port modding...lol

[BC81]

Yeah, I always pick up a couple challenger ports to start with. I have ports for all sorts lol.