Survey please help Fills shots and refill at pressure.

[MtnBikerSniper]

Maruader
.25 cal
3100 psi starting pressure
16 shots
2200 psi ending pressure

[louigi600]

Gun: Marauder with buffer installed
caliper: .177 (with 9.4 grain pellets)
Start Pressure: 2900
shots: 30
End Pressure: 2100

First 15 shots have an avarage velocity of 994 fps and a standard deviation of 2.2 fps.
The next 15 start dropping off about 6 fps each shot ending up at about 896 fps.

[eelect]

Fill pressure 2800
End pressure 2220
30 shots
hi 865 low 855 au 858 es 10 sd 2

Fill pressure 2800PSI
End pressure 2110
Hi 865 low 840 au 856 es 25 sd 5
40 shots

[louigi600]

After a quite some trial and error I was able to get this:
Start pressure: 2900 psi
52 20fpe shots on 10.6grain pellets cal .177 (extreme spread 32 fps)
End pressure 1900 psi

Buffer installed but no HDD.

[Keith_J]

Marauder .177.

Tuned for 3000 PSI fill, 950 ft/sec with Crosman Premier 10.5 grain pellets.

I get 30 shots with standard deviation of 12 ft/sec with ending pressure of 2050 psi.

[paperpunch]

I have the marauder .177 with the following tune I am getting 30 shots from a starting press. of 2200 and end press. of 1200
with jsb 8.4gr diablo domes.
Valve spring:CW2 from full ccw
Striker: CW8 from full ccw
Velocity: CC2 from full cw
Cannot say the fps 'cause it wasn't light enough for my chrony to work when I ran this test.
PaperPunch

[Barnydaddy]

BTW....
Sports Chalet in Vacaville will sell you a card: $45.00
This gets you 10 fills instead of $50.00

[cen-tex.25]

.25 marauder

43.2grn eunjin

8 shots(1 clip)

fill 3200psi

end 2600psi

es 10

sd 3

1-778
2-780
3-784
4-788
5-787
6-783
7-780
8-778

[ezman604]

1. Marauder
2. .25 Caliber
3. Fill Pressure 2800psi but sweet spot is between 2500 down to 2100psi
4. 24 shots before refill
5. Ending pressure 1950psi after 32 shots.

Shooting H&N Baracuda Hunter Extreme 28.40gr
At 2500psi top out at 820.95fps for 42.51fpe
Shot #24 is at 784fps for 38.77fpe
This with a 10# hammer spring turned in approximately 2 turns.

[ShawnHu]

1. Marauder
2. .25 Caliber
3. Fill Pressure 2800psi but sweet spot is between 2500 down to 2100psi
4. 24 shots before refill
5. Ending pressure 1950psi after 32 shots.

Shooting H&N Baracuda Hunter Extreme 28.40gr
At 2500psi top out at 820.95fps for 42.51fpe
Shot #24 is at 784fps for 38.77fpe
This with a 10# hammer spring turned in approximately 2 turns.

Very nice.