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NOW USE ONE TANK FOR .177, 22 & .25 CAL ON AIRFORCE AIRGUNS

Posted: Fri Nov 14, 2014 5:39 pm
by pramodsid
Finally you can use one tank for .177, 22 and .25 cal on Airforce airguns platform.

Am not sure this has been achieved before, if it has then the subject would have less emphasis.
Don't charge upon me for that !!!

The goal was to prepare a rig where you would not have to swap parts as that becomes cumbersome in the field .
Have been testing this out for a while and looks like the results are promising.

No more Tank Dumps.
Even tried the 90gr hammer on this rig at max power wheel to test tank dumps with the .177, there were none.

With 90gr hammer heavier hammer the .177 were travelling way above the supersonic speeds. Even the eun jins would.

Let the results speak for itself.

First Shot Sting Results with the .177 cal

Frame Compatibility : Condor/ Talon / Talon SS/ Talon P or Condor SS
Air Tank : "460cc Standard tank or 500cc Tanks. Test was carried out on 500 cc Tanks."
Valve Housing : http://pcptunes.com/high-flow-valve-air ... h-assembly
Valve : http://pcptunes.com/high-flow-valve-air ... flow-valve
Mod Under Valve : Custom Washer
Hammer : http://pcptunes.com/heavy-hammers-airfo ... r-70-grams
Barrel Length : 24" (.177 cal)
Pellets : JSB Exact 10.3gr
PW : "08/10 (The grub screw would be to the left of the horizontal number 8 and number 10 on the vertical wheel)"
Start Pressure : 3000 PSI
End Pressure : 1800 PSI
Average : 993.5
Min : 951
Max : 1022
Spread : 71
Count : Speed in fps
Shot 1 960
Shot 2 977
Shot 3 984
Shot 4 969
Shot 5 970
Shot 6 967
Shot 7 965
Shot 8 969
Shot 9 966
Shot 10 982
Shot 11 973
Shot 12 965
Shot 13 959
Shot 14 982
Shot 15 997
Shot 16 1008
Shot 17 1000
Shot 18 991
Shot 19 977
Shot 20 975
Shot 21 984
Shot 22 977
Shot 23 984
Shot 24 1001
Shot 25 1003
Shot 26 1003
Shot 27 1008
Shot 28 1019
Shot 29 1020
Shot 30 1017
Shot 31 1009
Shot 32 1011
Shot 33 1008
Shot 34 1010
Shot 35 972
Shot 36 994
Shot 37 996
Shot 38 997
Shot 39 1008
Shot 40 1001
Shot 41 1008
Shot 42 996
Shot 43 1009
Shot 44 1015
Shot 45 1018
Shot 46 1022
Shot 47 999
Shot 48 989
Shot 49 998
Shot 50 1010
Shot 51 1017
Shot 52 969
Shot 53 1022
Shot 54 1018
Shot 55 990
Shot 56 978
Shot 57 991
Shot 58 996
Shot 59 999
Shot 60 1005
Shot 61 996
Shot 62 1012
Shot 63 1002
Shot 64 982
Shot 65 1008
Shot 66 994
Shot 67 1015
Shot 68 1002
Shot 69 1008
Shot 70 995
Shot 71 1021
Shot 72 996
Shot 73 997
Shot 74 1008
Shot 75 1000
Shot 76 997
Shot 77 1004
Shot 78 1002
Shot 79 1008
Shot 80 1005
Shot 81 989
Shot 82 1003
Shot 83 981
Shot 84 998
Shot 85 1004
Shot 86 1007
Shot 87 989
Shot 88 1018
Shot 89 998
Shot 90 998
Shot 91 965
Shot 92 1002
Shot 93 990
Shot 94 994
Shot 95 987
Shot 96 1011
Shot 97 988
Shot 98 991
Shot 99 998
Shot 100 996
Shot 101 992
Shot 102 988
Shot 103 991
Shot 104 990
Shot 105 1007
Shot 106 985
Shot 107 975
Shot 108 993
Shot 109 999
Shot 110 986
Shot 111 986
Shot 112 984
Shot 113 989
Shot 114 985
Shot 115 986
Shot 116 993
Shot 117 998
Shot 118 991
Shot 119 995
Shot 120 998
Shot 121 988
Shot 122 992
Shot 123 997
Shot 124 984
Shot 125 981
Shot 126 969
Shot 127 985
Shot 128 981
Shot 129 981
Shot 130 986
Shot 131 967
Shot 132 963

Second Shot Sting Results with the .25 cal

Frame Compatibility : Condor/ Talon / Talon SS/ Talon P or Condor SS
Air Tank : "460cc Standard tank or 500cc Tanks. Test was carried out on 500 cc Tanks."
Valve Housing : http://pcptunes.com/high-flow-valve-air ... h-assembly
Valve : http://pcptunes.com/high-flow-valve-air ... flow-valve
Mod Under Valve : Not Required
Hammer : http://pcptunes.com/heavy-hammers-airfo ... r-70-grams
Barrel Length : 24" (.25 cal)
Pellets : Baracuda 31gr .25 cal
PW : "13/10 (The grub screw would be to the left of the horizontal number 13 and number 10 on the vertical wheel)"
Start Pressure : 2850 PSI
End Pressure : 1900 PSI
Average : 980.62
Min : 944
Max : 1010
Spread : 66
Count : Speed in fps
Shot 1 944
Shot 2 948
Shot 3 949
Shot 4 964
Shot 5 957
Shot 6 966
Shot 7 972
Shot 8 965
Shot 9 976
Shot 10 974
Shot 11 981
Shot 12 994
Shot 13 997
Shot 14 1000
Shot 15 997
Shot 16 999
Shot 17 1007
Shot 18 997
Shot 19 1010
Shot 20 1007
Shot 21 1002
Shot 22 1005
Shot 23 1003
Shot 24 999
Shot 25 993
Shot 26 987
Shot 27 986
Shot 28 1000
Shot 29 995
Shot 30 993
Shot 31 990
Shot 32 982
Shot 33 979
Shot 34 970
Shot 35 965
Shot 36 962
Shot 37 955
Shot 38 949
Shot 39 946
Shot 40 943

Would have loved to run a Shot String with .22 cal but didn't have a barrel to perform the test.

I could tune the rig further to get a lower Spread, but we ought to bear in mind, the versatility of using it across calibers without compromising on power and shot count.

Dedicated tanks could be tuned to shoot 50+ shots with an average spread lesser than 20. Do note it's a non regulated setup. With the regulated setup the spread could be least or minimum, but that would raise the cost of the setup too.

I have listed the entire bell curve, if you want to have tighter groups you could choose what best suits from the bell curve and fill to appropriate pressures to achieve promising results.

For those folks who are hungry for power, PCP Tunes heavier hammer or Extra Heavy will give you outstanding results.

Happy Safe Shooting !!!