I just picked up an early Model 352 K. It is not firing, only very light strikes, barely a mark on a case. It also doesn't want to feed from the magazine.
It looked to be in pretty good shape, just a couple cracks and dings in the stock and missing swivels. I cleaned up the sprayed on clear paint, steamed out the dents, fixed the crack then gave it six coats of tru oil.
But, on tear down it had a broken firing pin. I ordered the pin from Numrich and found that it's "close", but not quite right. I broke out the vice and files and think I have it right, but it still doesn't make dents in the case.
I do have a question on just how the FP works on this model. It looks to me like it floats about 1/16th in the hole in the striker, but rather than being hit by the striker, it is carried back and then forward with the striker, then has to continue forward on it's own momentum for that 1/16th after the striker hits the back of the bolt, and then rebound to clear the bolt face.
FP Retracted
FP Extended
Can anyone confirm that, or is it actually supposed to extend forward of the bolt face any time the striker is forward. That seems like a bad idea, but I've seen guns with worse design "features".
I've included some pics in hopes that someone will spot something else wrong. My suspicion is falling on the striker/hammer spring. It is definitely shorter than shown in the drawings, but I'm not sure if it's enough to cause an almost non existent strike, the FP barely leaves a scratch on the case, no dent at all.
The lower FP is the new one from Numrich. I'm still polishing, but it slides freely in the track with no binding. There are two differences from the original, the transition one inch right of the tip is smooth now instead of a sharp angle, but that area doesn't contact any part of the bolt, I don't think it effects anything. But, at the right end, the overall length is the same (the original looks longer because the broken ends don't match), but the left side of the notch is about 1/16 further right on the original than on the new FP. This may be my problem, but it looks like that face doesn't contact the striker, only the tab at the very right end seems to engage the striker. Any opionions, or should I just get a new spring and hope that's it?
I'm also having a problem with feeding LR from the magazine. It works if I push up just a bit, but not with the mag down on the lock. I don't think pushing the mag up is the right fix, since it causes the guide tabs in the middle of the mag to hit the bottom of the bolt as it goes forward.
I suspect that someone has tweaked the feed lips, since they have plier marks on them. Can someone take a look at these pics and maybe post a pic or two of a mag that does feed correctly? The pickup tab on the bottom of the bolt looks good and the mag seems to lock into place solidly.
Thanks,
Bob
It looked to be in pretty good shape, just a couple cracks and dings in the stock and missing swivels. I cleaned up the sprayed on clear paint, steamed out the dents, fixed the crack then gave it six coats of tru oil.
But, on tear down it had a broken firing pin. I ordered the pin from Numrich and found that it's "close", but not quite right. I broke out the vice and files and think I have it right, but it still doesn't make dents in the case.
I do have a question on just how the FP works on this model. It looks to me like it floats about 1/16th in the hole in the striker, but rather than being hit by the striker, it is carried back and then forward with the striker, then has to continue forward on it's own momentum for that 1/16th after the striker hits the back of the bolt, and then rebound to clear the bolt face.
Can anyone confirm that, or is it actually supposed to extend forward of the bolt face any time the striker is forward. That seems like a bad idea, but I've seen guns with worse design "features".
I've included some pics in hopes that someone will spot something else wrong. My suspicion is falling on the striker/hammer spring. It is definitely shorter than shown in the drawings, but I'm not sure if it's enough to cause an almost non existent strike, the FP barely leaves a scratch on the case, no dent at all.
The lower FP is the new one from Numrich. I'm still polishing, but it slides freely in the track with no binding. There are two differences from the original, the transition one inch right of the tip is smooth now instead of a sharp angle, but that area doesn't contact any part of the bolt, I don't think it effects anything. But, at the right end, the overall length is the same (the original looks longer because the broken ends don't match), but the left side of the notch is about 1/16 further right on the original than on the new FP. This may be my problem, but it looks like that face doesn't contact the striker, only the tab at the very right end seems to engage the striker. Any opionions, or should I just get a new spring and hope that's it?
I'm also having a problem with feeding LR from the magazine. It works if I push up just a bit, but not with the mag down on the lock. I don't think pushing the mag up is the right fix, since it causes the guide tabs in the middle of the mag to hit the bottom of the bolt as it goes forward.
I suspect that someone has tweaked the feed lips, since they have plier marks on them. Can someone take a look at these pics and maybe post a pic or two of a mag that does feed correctly? The pickup tab on the bottom of the bolt looks good and the mag seems to lock into place solidly.
Thanks,
Bob