Marauder Problems

It's been years since I had mrod, but I remember having similar issues. If I remember correctly bolt # 25 in this diagram got loose and caused that. Maybe worth to check.

Does it do it with the magazine out? If so, the problem could be one or two things. (I believe )

One-

The “grease” used in this area during assembly for what ever reason will turn to a consistently and the feel of sap. 

Two-

there is a adjustment screw on top and at the back of the breech. This screw hold tension on the bolt to keep it from flopping around during operation. If you feel the need to adjust this, do so with very little movement. 

What I recommend is to take the breech off to access the bolt and the area the bolt slides through. Give it a through cleaning and a light lubing with a quality moly grease.

If you need detailed help on removing the breech, PM me and we’ll set up a time to go over it. 





Pull back on the bolt and hold it open. Does your bolt feel sticky at all? If so you can try spraying a gun suitable solvent in and around the bolt while working it back and forth and around. 

When cocking always listen for 2 clicks, one from the magazine, other from hammer engaging sear, then close bolt and lock down. Double loading should only be an issue if you're not engaging the sear properly upon cocking the rifle, if when this does occur simply ensure proper engagement on second attempt while removing the mag before closing bolt to prevent a double load.



-Matt

Same here. I've had mine for 6 months and the problem is getting worse. I have 5 magazines and a number of different brands, weights, and shapes of pellets and it happens in any combo. I tried a bit of grease on the bolt, as someone suggested, but not much help. I tried the screw on top as suggested by Benjamin Help, (#24 on the diagram, I believe), but only a slight change. 

The only other thing I can see is that the magazine slides to the left too far as I insert it. I tried to pull it back a hair to get better alignment and that seemed to help, but it's not really a "fix".

Can't wait to see if someone here has a fix for it. Thanks.

I have three Gen I Marauders in all three calibers.

Never..Never a problem..

I have a .22 and a .25 cal 2nd Generation Marauder and had some issues but they got worked out pretty darn well with loosening the screw on top at the rear of the breech, a good coating of moly lube on the bolt and making sure that bolt was all the way back as far as it would go and holding it for a second before pushing forward. If the bolt is not all the way back and held for a second before pushing forward, I would get the same issues you are describing.

is it the pellet pushing into the breech that gets hung up or feels bad?

also maybe the magazine has issues, things not lining up correctly. if you hand load (single feed) and the pellet loads good and smooth, possibly just the magazine

Just a question! Are you positive you don't get a pellet in the magazine backwards from time to time?

Is it smooth with the mag out? I've had bolt #23 be a little tight and it will cause what you are describing. That bolt doesn't need to be tight. Just turn it in until you can feel it effecting the drag on the bolt.

Welcome to the airgun world"next.

del

There was a guy on here a few days ago that had the same problem as well as a really tight choke on his new F. T model with the Croman barrel 177 barrel. I think he deburred and polished it and got it shooting OK but wasn't really happy with it and was asking if the L.W barrel was worth the extra dosh. You might want to check that thread out before you send it back.

Description of single loading sound like a poor lead/transfer port urr or such which is likely scraping off & maye in your case building up more crud as pellets go by. 

Warranty?

Easy top pull the barrel and inspect it.



John

Sounds like a burr in the transfer port to me. Did you buy this gun new or used? You say you’re a new owner, and I’m taking that as this is your first ever pcp gun and you possibly bought it used? If so, the previous owner probably put in a larger transfer port and did the recommended transfer port enlarging but didn’t debur properly after the drilling. Something is catching on the pellet as it passes thru. If it’s a new gun I would still suspect this as it came that way from the factory, un deburred.

also, if you find the cocking hard, or feels like it’s scraping, the channels inside in both the pressure pipe and receiver that the hammer and bolt lugs ride on should be deburred with a polishing ball on a Dremel or drill, then apply some moly paste along these channel edges. On my Marauder pistol I noticed the bolt lug on the receiver was starting to form a hex flat instead of remaining round as it came, and saw that it was scraping against the channel slot. I took a polishing ball bit along with a jewelers file to the channels sides and that cured all that. Cocks really smooth now.

Hold the magazine in your hand and use a tooth pick or pencil and push each pellet out of the magazine on to your bench. Does inch pellet seem to push out easier? If not, is the wheel inside the magazine rotating freely? If it doesn't rotate freely, loosen the screw in the magazine very slightly and try again. Google Marauder magazine repair. I believe I remember Hisamoto had a video on magazine breaking for either the Marauder or the Gauntlet whose magazine is made the same as the Marauder. Hope this will help.

Its not hard to install the barrel o-ring without disassembling. Pinch the o-ring and insert into the barrel groove at an angle and you can get the o-ring pushed on into place. A little silicone grease or Pellgun oil will help it slide into place.