My dad gave me my grandfathers 25a. I dont remember my dad ever shooting it, it just hung on the wall. I tried 4 different brands of 22 and see the mark where the firing pin hit the rim, but none of the rounds fired. I am guessing the pin is worn just enough that it isnt striking hard enough. I cant find a replacement anywhere. I would really like to get this shooting again so I can give it back to my dad as a working rifle. Does anyone know where to find parts like this? Noone has them online that I have found. Or would it be easier to take it to a gunsmith to see if they can add a little metal to the pin? Thanks for any help or advice.