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Marlin Model 20 Pump ...is this

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5.6K views 24 replies 8 participants last post by  leurckje  
#1 ·
This is RimFire ... but may need to be addressed by another thread, so I apologize in advance. Was at a local pawn shop and i noticed some rather strange rifles the other day. One was a Marlin Model 20, pump action .22LR. It was beautiful, but had no idea they even made such a thing. I ended up with it and now i want to locate some replacement screws for various ones that seem to have been removed with the wrong size screwdriver. Numrich has a few but the schematic diagram they have is ... lacking in helping me identify what ones i actually need. So, I figured i could reach out here and ask for some assistance in identity and possible sourcing for some of these parts. I'm no stranger to the Marlin name, I have owned a Mod 39A for most my life and its nothing short of amazing but this Mod. 20 seems fun and unique. I has what appears to be a Marbles Tang sight on it but I have never seen this type before, period correct for sure. The rifle cycles fine, the bore is original and surprisingly super bright and no pits. The magazine spring may need to be replaced but will find out today after i take it to the local range. here is a pic from the pawn shop with two Remington Mod 12's (they cycled good but have seen better days). Reguards, Jim
 
#5 ·
Range report:

Location: Hurlburt Field, FL Rifle Club
Weather conditions: light steady rain, humidity 94%, 54 deg F
had the range all to my self!

total rounds fired: 1

Description:
Arrived to the range and was only one there (besides the Club Manager) and safety checked the impact areas and hung targets at 27 yards. I returned to shooting position, declared the Range Hot and assembled the Mod. 20 (yes, its like the Mod. 39's in that it breaks down). Loaded the magazine tube with two rounds, this would tell me two things. 1) it cycles with live ammo and 2) it can fire the ammo. I cycled the pump and place one in the chamber. I observed it going into battery and the bolt closing fully forward. I placed it into the rifle rest, took aim and fired the first round. I was high, by like 6-7 inches from the bullseye but anticipated that at a close range without any re-zero of the sights. I cycled the pump to the rear and it ejected the spent case in the same matter as a Mod. 39 would. I then went to pull the hand guard forward to chamber the second round and it would not move forward. I turned the rifle on its side to look down into the mechanism and noticed that the (i don't know the proper terms just yet ...) cartridge carrier dog had the second round in place but was not lifting it properly to place the round in alignment for the bolt to carry it into the chamber. The only way i can describe it is, as if in a Mod. 39 ... with the lever all the way forward but not able to pull the lever back up and seeing the next round sitting there. So, I disassembled the rifle vice calling the Security Police and EOD, place the rifle into its two separate parts and recovered the live round. Place the rifle back into my case and spent the remaining time with another .22 that i brought along. The question i now have is, what could cause this and who do i contact about having it either fixed or inspected to make sure things are good. I am about to clean it up and put it away for now, will try to post pics soon.
 
#6 ·
Jim welcome from Texas, very nice find for a nice looking rifle. I bet it will shoot as good as it looks... Mike
 
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#7 ·
What ammo did you shoot? Standard velocity, high velocity, hyper velocity? some of these older models can only shoot standard velocity without breaking something...

Post pics of the bolt assembly... All 4 sides...
 
#11 ·
it functioned fine, its just that the cartridge carrier dog (pics 6,7 ... that part that lifts the next round up for the bolt to carry into the chamber ... ) would not lift the next round up into the chamber. I will use standard velocity or shorts next time but i believe there is something else at fault here. I am going to order a couple plastic dummy rounds to send through it in hopes of safely identifying the issue.
 
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