Tuning Benjamin Marauder SAM PELLET JAMS

[jkrug80205]

I purchased a Ben SAM a couple of months ago from a firearms dealer (not an experienced airgun dealer). It was supposed to be new but I have my doubts. I shoot Crosman 14.3g Domed & Hollow Point pellets. I rarely cycle through all 10 pellets without experiencing a jam or multiple jams on the same magazine (the pellet apron gets smashed). I have unsuccessfully tried the full range of hammer power settings. I use Benjamin SAM magazines. All 4 of them fail. When the rifle shoots it is very accurate. The rifle also holds air very well. It appears in all cases that the jam occurs during the automatic cycle, not on the first shoot. It fails on random pellets, not always the same pellet.

My problem is what to do next. In NJ pellet guns are considered firearms and are supposed to be shipped and received through FFL firearm dealers. Has anyone experienced this problem and have any suggestions? Can anyone identify someone that I can contact for assistance or suggestions?

UPDATE: I took a close look at the travel of the bolt and noticed that it did not appear consistent in its movement when dry firing. It was moving crazy fast also. I then did a breakdown and lubricated where necessary. Next I noticed that the barrel o-ring appeared to be damaged. This was the third one. I replaced it and lubed it. I then cleaned the barrel (first time) and did a dry fire test. I was amazed to see the bolt moved as expected. Next I tested with Crosman Ultra Magnum Domed pellets, 14.3g. I shot 100 pellets at around 850fps. My standard deviation over 40 pellets was 3.2. Beautiful. I suspect that I was experiencing multiple problems. I would recommend that anyone that purchases this rifle would first clean the barrel and start testing with the Crosman 14.3g pellets. It’s a beauty when it is shooting correctly.

 

[needledriver]

I am not familiar with this one but I have 4 guesses. The auto mechanism is not moving far enough to the rear to function, the spring pushing it forward may be a little weak, the mech may need a little polish or a different lube.

Hope that helps.

 

[needledriver]

Another thought. Something may be bent but not enough to see it.

 

[jkrug80205]

Thanks needledriver, I'll have a close look at both possibilities.

 

[jkrug80205]

Thanks needledriver, I'll have a close look at both possibilities.

 

[thekidfan]

No help on the jam issue but as far as shipping unless NJ is extra crazy lol it is or was legal to ship firearm for repair and they can return it to the same address I did that some years back when I was having extra barrels fitted and I didn’t use an ffl on my side 

 

[jkrug80205]

Super! It looks like I maybe sending it in for repair. Thanks for the info.

 

[bearbar]

As far as shipping do you know anyone out of state where you could ship from and to

Just a thought it might save you some time and money

 

[jkrug80205]

Problem is solved. See the update in the original post. Great rifle.

 

[tkarl]

I purchased a Ben SAM a couple of months ago from a firearms dealer (not an experienced airgun dealer). It was supposed to be new but I have my doubts. I shoot Crosman 14.3g Domed & Hollow Point pellets. I rarely cycle through all 10 pellets without experiencing a jam or multiple jams on the same magazine (the pellet apron gets smashed). I have unsuccessfully tried the full range of hammer power settings. I use Benjamin SAM magazines. All 4 of them fail. When the rifle shoots it is very accurate. The rifle also holds air very well. It appears in all cases that the jam occurs during the automatic cycle, not on the first shoot. It fails on random pellets, not always the same pellet.

My problem is what to do next. In NJ pellet guns are considered firearms and are supposed to be shipped and received through FFL firearm dealers. Has anyone experienced this problem and have any suggestions? Can anyone identify someone that I can contact for assistance or suggestions?

UPDATE: I took a close look at the travel of the bolt and noticed that it did not appear consistent in its movement when dry firing. It was moving crazy fast also. I then did a breakdown and lubricated where necessary. Next I noticed that the barrel o-ring appeared to be damaged. This was the third one. I replaced it and lubed it. I then cleaned the barrel (first time) and did a dry fire test. I was amazed to see the bolt moved as expected. Next I tested with Crosman Ultra Magnum Domed pellets, 14.3g. I shot 100 pellets at around 850fps. My standard deviation over 40 pellets was 3.2. Beautiful. I suspect that I was experiencing multiple problems. I would recommend that anyone that purchases this rifle would first clean the barrel and start testing with the Crosman 14.3g pellets. It’s a beauty when it is shooting correctly.

I purchased a Ben SAM a couple of months ago from a firearms dealer (not an experienced airgun dealer). It was supposed to be new but I have my doubts. I shoot Crosman 14.3g Domed & Hollow Point pellets. I rarely cycle through all 10 pellets without experiencing a jam or multiple jams on the same magazine (the pellet apron gets smashed). I have unsuccessfully tried the full range of hammer power settings. I use Benjamin SAM magazines. All 4 of them fail. When the rifle shoots it is very accurate. The rifle also holds air very well. It appears in all cases that the jam occurs during the automatic cycle, not on the first shoot. It fails on random pellets, not always the same pellet.

My problem is what to do next. In NJ pellet guns are considered firearms and are supposed to be shipped and received through FFL firearm dealers. Has anyone experienced this problem and have any suggestions? Can anyone identify someone that I can contact for assistance or suggestions?

UPDATE: I took a close look at the travel of the bolt and noticed that it did not appear consistent in its movement when dry firing. It was moving crazy fast also. I then did a breakdown and lubricated where necessary. Next I noticed that the barrel o-ring appeared to be damaged. This was the third one. I replaced it and lubed it. I then cleaned the barrel (first time) and did a dry fire test. I was amazed to see the bolt moved as expected. Next I tested with Crosman Ultra Magnum Domed pellets, 14.3g. I shot 100 pellets at around 850fps. My standard deviation over 40 pellets was 3.2. Beautiful. I suspect that I was experiencing multiple problems. I would recommend that anyone that purchases this rifle would first clean the barrel and start testing with the Crosman 14.3g pellets. It’s a beauty when it is shooting correctly.

Newbie here, but I read a LOT of YT reviews.
You stated that the FIRST pellet was 'firing' but not later ones.
I may have a very simple solution for you: Make sure to press that button just above the cocking lever; even do it a few times. Steve Shally also had difficulties until he homed that first pellet in with the button. (I'm assuming you've cleaned the barrel first!) Let me know if this helps you out.