MarauderAirRifle.com

1. marauder
2. 25cal
3. Fill 3000psi
4. 16 shots
5. Refill at 2200

JSB 25.4 grain shooting at avg 875 fps

Min 859.50
Max 883.80
Average 875.20
Median 877.65
Extreme Spread 24.30
SD 7.47
Cumulative Foot Pounds 691.44

1. Marauder
2. 177
3. Fill 1900
4. 40 shots @790-820fps
5. Refill 1500

Shooting CPH 10.5 on indoor 10m range so trying to get as many fills out of a 80cf scuba tank with good patterns as possible.

Spring 2.5 in, Hammer striker 11.5 in, Transfer port 3 out (in=CW, out=CCW)

Bench & chronograph while tuning & pressures from one of Joes fill assemblies, my gun gauge is very close to the big one.

73, Dan

marauder 25
fill to 3000 ish
3 clips 24 shots
refill at about 1700
ive only had this a few weeks and it is set from the factory

1. Marauder
2. .22 cal.
3. Factory setting
4. Velocity screw turned back just under 1/4 turn
5. Fill to 2600psi
6. Shoot 30 shot string
7. Refill at about 1900psi
8. CPs BOX ONLY!

This setting gives me a 30 shot string the high velocity is 856fps lowest is 831fps the avg. is 848fps.
The first shot is at 840fps.
The highest shot is number 16 at 856fps.
The lowest shot is the last shot at 831fps.
This is a very good curve.

My gun shoots the CPs from the box with extreme accuracy from the bench! I love to shoot this gun, I guess I got a good one!


Shoot straight
Roger

Gun-GD tuned Mrod
16gr Pellet...940fps
42 shots from 3200psi
down to 2300 with no POI
shift at 50yds.

57 shots at 25yds with no POI
shift at 25yds,
3200psi, down to 2000psi.

s/f

Jamie

I fill to 3000psi and get an average of 35 shot down to 2000 psi

22 cal
guns favorite pellets barracuda 21.1 grain
velocity 860 fps

will drive nails and I have actually done it

Fill Pres. 2600 psi
Refill at 2000 psi
Ave. Vel. 840 fps
Pellet Kodiak Match .177
I shoot Hunter Field Target with this setup.
I get 30 Great shoots before filling.
Very Accurate Setup!!

Hello there im new here at this forum and would be happy to help,i will try to post this weekend
Mike

Not sure if these will help with the spreadsheet but after 4 months I've ended up with 2 different tunes for my Marauder depending on if I'm after accuracy or just plinking for practice on my 10m indoor range (using that term loosely as its basically through the living room up the front hallway).

Settings from adjustment bottom, full CCW on hammer spring & striker, CW on metering screw, .177 Marauder:

Hammer spring 1.5 turns clockwise, striker 11 turns CW, metering screw 2 turns counterclockwise.

Starting pressure 2300psi
40 rounds per fill
ending pressure 1700psi

This gives me <.25" 10rd groups at 10m using Crosman Premier heavy 10.5gr, 821-841fps.

Hammer spring 0 turns (bottomed CCW), striker 11.5 turns CW, metering screw 1.5 turns CCW

Starting pressure 2100psi, much above shows valve lock
100 rounds per fill
ending pressure 1200psi

This gives me .5" groups at 10m with both CPH 10.5gr & CP Match 7.9gr wadcutters with nearly identical point of impact, very quiet. 689-737fps CPH, 768-815fps CP Match. Great for practicing my gun holds and trigger handling in the house which is what I bought the Marauder for.

73, Dan

Could you please reply to this post with:
1. Gun Model - Marauder
2. Caliber - .22
3. Fill Pressure - 2800psi
4. Typical number of shots taken before a refill - 40 21.14 Baracuda's
5. What is the ending pressure in the gun. - 1400psi. Close to 33psi per shot. 1/2" group at 50 yards.