I've got an old 1972 Marlin/Glenfield 75 that I've put thousands of rounds through. It began jamming up quite a while back, so I stored it away, in hopes that one day, I'd fix it and use it again. Stripped it down, replaced the recoil spring, as it was without doubt, shot. My youngest son has now been bitten for the love of shooting, so I let him take her out and give her a trial with the new spring. Well, it seems the jamming is still a problem. Out of 200 rounds, he said it jammed up 15 times.
We stripped it down again and thoroughly cleaned every nook and cranny and oiled up the necessary areas and it's ready to be tried again. I'm hoping that it was just bad ammo that he was using, because it left a heck of a lot of unburned powder residue in the chamber for only 200 rounds. We are going to try different ammo this time.
I do not believe it to be a feed throat issue, but an extraction issue with breech bolt. My question to gunsmiths is, the inside ejector pin has next to no movement whatsoever, while the right side has plenty of movement and a fair amount of spring tension behind it. Looking at this old design breech bolt, I'm asking myself if this thing is operating properly or not. I do not want to give this firearm up! It was dependable as heck when it worked properly. Finding parts is oh so fun. Everybody is out of stock on anything I may need.
Second question is, if I do have to replace the feed throat and breech bolt with the newer style, is it something I can do or am I looking at taking it to a gunsmith and have them do it?
We stripped it down again and thoroughly cleaned every nook and cranny and oiled up the necessary areas and it's ready to be tried again. I'm hoping that it was just bad ammo that he was using, because it left a heck of a lot of unburned powder residue in the chamber for only 200 rounds. We are going to try different ammo this time.
I do not believe it to be a feed throat issue, but an extraction issue with breech bolt. My question to gunsmiths is, the inside ejector pin has next to no movement whatsoever, while the right side has plenty of movement and a fair amount of spring tension behind it. Looking at this old design breech bolt, I'm asking myself if this thing is operating properly or not. I do not want to give this firearm up! It was dependable as heck when it worked properly. Finding parts is oh so fun. Everybody is out of stock on anything I may need.
Second question is, if I do have to replace the feed throat and breech bolt with the newer style, is it something I can do or am I looking at taking it to a gunsmith and have them do it?
