Like most I have been lurking for quite some time gathering all the good info I could from a rather enlightened group of people here on RimFireCentral, however recently I have a question of my own that I do not see addressed anywhere.
Recently I was out shooting my old 151 and have a good day at that when I heard a odd noise. I soon found out that my firing pin had broke in two at the secontion where it is cut out for the pin in the bolt. (The most narrow of spots)
I was rather frustrated, however quickly realizing that it most likely was original I quickly calmed.
I ordered and recieved a new firing pin to which I promptly installed. Not being a gun smith I was a bit cautious of my efforts, however being a simply firing pin replacement I thought I should be fine.
In fact for some extra security I removed the bullet and powder from a round and simply loaded a primed case to which was promptly stuck by the new pin.
I then headed out to the range to give 'er a good whirl and found things to be going along just fine for the first few rounds. Then i had a jam--- a double feed actually. After clearing that I went on and the same happened a few shots down the road. Finally I was getting to the last 4-5 rounds in the tube when one trigger pull = a double tap. Effectively the rifle shot two rounds automatically, and then stopped. The last two rounds went down range just fine with no jams.
I thought it to be very odd, and rare that the rifle would operate this way so I loaded it again to make sure it could be reproduced. To which I found it can--Simply put the rifle now jams much more often, and almost without fail when getting down to the last 5-6 rounds in the tube fired off a pair instead of a single shot.
I have since taken the rifle apart and thouroughly cleaned it, however the same performance/effect plauges me.
I am currently looking for a smith in the SoCal, Los Angeles area that is familiar with the 151Mb to take a look, however I am simply puzzled how this can be happening as the action of this model rifle is rather straight forward.
This rifle is going into a smith before i take it out again for fear the ATF will have my head if it is thought to be "automatic" due to it's current state.
My questions are:
Has anyone ever experienced this and what was the cause? (Ideas?)
Does anyone know of a smith in my area that has knowledge of these rifles?
Thanks for the help guys and gals!