New Marauder Pistol

[CraigH]

The Benjamin Marauder pistol was to be my first PCP about a year ago or so, but went to the back of the queue for a while and a few others arrived first.   Having one here now, I very much like it.   It arrived double boxed with the outer box in a condition that can only be called perfect.   Not much used to seeing such care by shipping agencies.

Getting to the inner box and opening it, I found excellent packaging and quite a nice package – well, save the Crosman 1399 shoulder stock, which is simple, light, and effective, but no more elegant than on my 22XX airguns.   Nice bolt action, magazine works well.    Not too sure I would have got the magazine working without instruction!

The pistol arrived with some air in it, so it was filled and shot for a first string as out of the box.    That string was shot from 3000 psi to 1600 psi to see the limits of the curve and it was a good bell curve with 46 shots (of course not 46 useful shots).   Not knowing the spring and hammer adjustments I could see the pistol was running from 631.3 fps at ~2675 psi to 631.7 fps at ~1930 psi, with the highest velocity at 655.2 fps at ~2160 psi.   (A series of 11 shots in the middle averaged 649.58 fps with a 9.6 fps ES )

Now having an idea of the tune from the factory, the pistol was refilled to 2750 psi, the spring preload and the hammer stroke were both increased ½ turn, and shot with the string results in the graph below.   Nothing special, but a beginning point.

[cootertwo]

Revive this old thread. I'm playing with my Marauder pistol, and with the hammer spring screw all the way in, I'm getting close to your numbers. But how do we go higher? I wish it had the sting of my Wildcat. Guess with the short barrel, we can't expect much more. Talking 22 cal.

[moorepower]

They really respond to a heavier hammer spring and an Oring buffer. I used the square orings from McMaster Carr  and they don't move around. I tuned mine from 700-720-700 with a 14.66 pellet for 3 mags.  Their are lost of tunes more efficient than mine out there. I drilled out tp and or valve to .101 I "think" . It's been a while.

[Bigragu]

They really respond to a heavier hammer spring and an Oring buffer. I used the square orings from McMaster Carr  and they don't move around. I tuned mine from 700-720-700 with a 14.66 pellet for 3 mags.  Their are lost of tunes more efficient than mine out there. I drilled out tp and or valve to .101 I "think" . It's been a while.

By chance do you have a part number of the McMaster Carr spring? I have a PRod on the way. It’ll be at my house sometime next week. I’ve been recently doing all the reading on archived PRod threads on multiple forums. I cannot believe the amount of aftermarket support towards performance for a PRod...way more than the rifle it seems. The one mod part I like is the replacement fill port end, that comes with a thread on cap like the rifle does. Can’t believe Crosman designed the cap to be a simple push on, rather than a thread on like the rifle.

I cannot seems to locate aftermarket lightweight hammers though. I just want to see what they look like, in comparison to the rifles hammer

[frodo9mm]

Craig - Thank you for the excelled write-up and review.  Sounds like you have a Shooter!  Best Regards, Fletch

[gendoc]

if you got the coins, the prod can achieve 40fpe easily.
i'm at 38 with mine after i turned it down to gain a few more shots.

[CraigH]

Craig - Thank you for the excelled write-up and review.  Sounds like you have a Shooter!  Best Regards, Fletch

Thank you!   It's a stock shooter.   Others have made excellent mods increasing performance substantially.