New build

temchik · January 30, 2017, 05:10:23 PM

Hi All,

I decided to leave my custom shop 1322 intact, and instead do a separate build of a backpacker-on-the-cheap. Got a P1322 which looks a bit more "backpack-able" with the 10" barrel.. While I am waiting for parts, I chronied it completely stock:

3 pumps = 320fps (exactly as my custom shop one)
5 pumps = 400fps (CCS is 420)
10 pumps = 500fps (CCS is 540)
15 pumps = 560fps (CCS is 600)

ETA: so the formula for extra barrel length FPS gain works! the stock gun is exactly 40fps lower than the one with a 14" barrel on full power

I am waiting for Mellonair's FT valve and piston + a long probe) and Alchemy's fiber optic front sight. I am not going to install the steel breech due to budget constraints. With all honesty, the stock breech and rear sight are perfectly fine to me.

On thing I noticed with the retail P1322 is that the front sight is just a little loose side-to-side. Will see how the fiber optic behaves, I realize this is probably due to the barrel not being fixed in the breech.

Will update with the build process and results when done

Brutuz · January 30, 2017, 09:16:06 PM

Nice twins

Noah · January 30, 2017, 09:24:22 PM

Quote from: temchik on January 30, 2017, 05:10:23 PM

ETA: so the formula for extra barrel length FPS gain works! the stock gun is exactly 40fps lower than the one with a 14" barrel on full power

That totally jives with the ol' rule on gaining FPS with a longer barrel: Each inch will enable you to gain 10 FPS (diminishing returns with extreme lengths, of course).

Seeing your post makes me want to go out to shoot and play with my toys.

temchik · January 31, 2017, 12:24:47 AM

Aren't we enablers here?

Quote from: Noah on January 30, 2017, 09:24:22 PM
That totally jives with the ol' rule on gaining FPS with a longer barrel: Each inch will enable you to gain 10 FPS (diminishing returns with extreme lengths, of course).

Seeing your post makes me want to go out to shoot and play with my toys.

BillK · January 31, 2017, 12:42:00 AM

Personally I would add these to both of your guns. You WILL notice the difference.
http://mellonair.myfreesites.net/solid-pins

Alchemy (Davios) barrel bands also do a great job in keeping the barrel from moving while pumping. You can also drill & tap a set screw in the plastic breech. It doesn't hold the barrel as well as the steel breech but, every little bit helps. He also has better looking solid pins and if going with those you can also get the bushing & reinforcing ring from Mellon. I have used his bushings & reinforcing rings on all my Crosman & some Benjamin pump guns.

Just a few more places to spend your $. However, the return is better than just bling.

temchik · January 31, 2017, 12:51:40 AM

Yes, I have them on order as well, just didn't mention

KurtM · February 01, 2017, 03:19:41 AM

Quote from: temchik on January 30, 2017, 05:10:23 PM
With all honesty, the stock breech and rear sight are perfectly fine to me.

I can dig it. I upgraded my 1322 to long steel breech and Williams peep sight, and to tell you the honest-to-goodness truth? I almost miss the stock peep sight, and I kind of wish I'd have kept the stock plastic breech just to see how it held up over time. Whatever, there's no question about it, I absolutely loved the peep sight right out of the box.

temchik · February 01, 2017, 03:43:18 AM

Well, the Williams peep is great and sturdy, it's just a $100 upgrade (breech+sight) to an $80 gun is all...

Trophyhunter49 · February 01, 2017, 03:55:46 AM

( it's just a_ $100 upgrade (breech+sight) to an $80 gun is all...)
[/quote]
That's not bad! I know there are guys on here Me included that have WAY more that that on guns that cost less!

Once that BUG as bitten you there IS NO KNOW cure for it.

Welcome to the world of air gun mods.

BillK · February 01, 2017, 06:40:40 AM

Quote from: temchik on February 01, 2017, 03:43:18 AM
Well, the Williams peep is great and sturdy, it's just a $100 upgrade (breech+sight) to an $80 gun is all...

Ya but, now it is not an $80 gun. The upgrades are for function not just bling.
Now the Stainless Steel & Brass parts, while they could also be for function, are more for bling. Gotta admit that the bling does attract me.

Trophyhunter49 · February 01, 2017, 12:53:13 PM

Quote from: BillK on February 01, 2017, 06:40:40 AM
Ya but, now it is not an $80 gun. The upgrades are for function not just bling.
Now the Stainless Steel & Brass parts, while they could also be for function, are more for bling. Gotta admit that the bling does attract me.

Gippeto · February 01, 2017, 03:35:43 PM

Like fish and crows....we do like shiny things.

Al

Trophyhunter49 · February 01, 2017, 06:35:22 PM

temchik · February 01, 2017, 08:34:44 PM

All right, all...

I installed the new valve and piston and it's leaking... Pump - and there's hissing from the transfer port........ did I do something wrong? help!!!

arkmaker † · February 01, 2017, 08:55:08 PM

Could be a few things, but you are going to have to open up the valve and take a looksie. Look for the o-ring being torn and then look for crap inside the valve itself. Sometimes a piece of metal gets pushed in there when machining the face. Clean everything in there and wipe out with q-tips. Put it all back togeter and try it.
Also, I know this is probably not it, but make sure the short side of the TP is in the valve and the long side up into the barrel.