Inherited this 1322 Ph 2- plastic breech - Need advice

[eric]

i can't say fer certain but the PDF files on crosman's site looks like there are no springs --- as long as it works, it's all good


https://support.crosman.com/hc/en-us/categories/200223634-Owner-s-Manuals-and-Parts-Diagrams

[Underdog]

Put a few rounds across the chronometer this weekend. FPS numbers look pretty good for a stock gun...

10 pumps: 444 fps avg.
15 pumps: 477 fps avg.
20 pumps: 492 fps avg.

(Is there some reason I shouldn't put more than 10 pumps in this gun?)

--------------------------------------------------------------------
Created: 10/01/16 11:46 AM
Description: 1322- 10 pump Cros Destroyer .22
Distance to Chrono(FT): 0.25
Ballistic Coefficient: 1.000
Bullet Weight(gr): 14.30

#          FPS  FT-LBS      PF
6    441      6.18    6.31   
5    ERROR 3
4    445      6.29    6.36   
3    442      6.20    6.32   
2    448      6.37    6.41   
1    442      6.20    6.32   
Average: 443.6 FPS
SD: 2.9 FPS
Min: 441 FPS
Max: 448 FPS
Spread: 7 FPS
True MV: 444 FPS
--------------------------------------------------------------------
Created: 10/01/16 11:43 AM
Description: 1322- 15 pump Cros Destroyer .22
Distance to Chrono(FT): 0.25
Ballistic Coefficient: 1.000
Bullet Weight(gr): 14.30
#          FPS  FT-LBS      PF
5    478      7.26    6.84   
4    475      7.17    6.79   
3    472      7.08    6.75   
2    479      7.29    6.85   
1    482      7.38    6.89   
Average: 477.2 FPS
SD: 3.8 FPS
Min: 472 FPS
Max: 482 FPS
Spread: 10 FPS
True MV: 477 FPS
---------------------------------------------------------------------
Created: 10/01/16 11:37 AM
Description: 1322- 20 pump Cros Destroyer .22
Distance to Chrono(FT): 0.25
Ballistic Coefficient: 1.000
Bullet Weight(gr): 14.30
#          FPS  FT-LBS      PF
5    498      7.88    7.12   
4    494      7.75    7.06   
3    487      7.53    6.96   
2    489      7.59    6.99   
1    490      7.63    7.01   
Average: 491.6 FPS
SD: 4.4 FPS
Min: 487 FPS
Max: 498 FPS
Spread: 11 FPS
True MV: 492 FPS
-----------------------------------------------------

While the FPS numbers look pretty good, the FPE numbers don't look so good... Seems like I'd need more than 7 FPE to make a good kill shot, yes?

[eric]

depends --- not a hunter but pests i will kill --- from crosman ... i might use this as a GENERAL guide line http://www.crosman.com/pdf/CrosmanAirgunPelletCapabilitiesChart20120713.pdf

[Underdog]

Not one of those is below 11 foot pounds energy...

I'm rather nervous about shooting anything but a target with this thing.