krinko
Member
I have two rolling block rifles, a Swedish M1867 in 50x?mm and a Pedersoli .45-70 with a 30" barrel and the lesser type of tang sight.
The Pedersoli is supposed to be a "long range" rifle, but the trigger pull running over fifteen pounds seemed to be a bit problematic, so I took the hammer out to fix it.
First impression was not good, the sear notch in the hammer was angled up on one side and down on the other, with a deep tool mark running across the whole face. In effect, the notch was cut for a light pull and heavy pull at the same time, with a tool mark deep enough to catch the trigger contact and add friction to boot. Nice.
I set up the hammer in the vise and stoned the sear notch to uniformity matching the "up" or light pull side, since this would remove the least metal from the hammer and leave plenty of room to reform the sear notch for a heavier pull, if needed.
Well, that was a nice idea, but it was the wrong idea.
During testing, the breech block was pulled back and when I moved it forward again, the hammer followed it down. So the trigger rode along the bottom of the hammer and was hit by the half cock notch moving full speed ahead. Broke about 1/3 of the half cock clean off.
I said some things then. And I meant every word.
Going to stone a heavier angle on the sear notch this weekend and I'm contemplating grinding the rest of the half cock off and doing without. I'm not going to be carrying this rifle around loaded, so it doesn't need to be there.
Photos when I can.
-----krinko
The Pedersoli is supposed to be a "long range" rifle, but the trigger pull running over fifteen pounds seemed to be a bit problematic, so I took the hammer out to fix it.
First impression was not good, the sear notch in the hammer was angled up on one side and down on the other, with a deep tool mark running across the whole face. In effect, the notch was cut for a light pull and heavy pull at the same time, with a tool mark deep enough to catch the trigger contact and add friction to boot. Nice.
I set up the hammer in the vise and stoned the sear notch to uniformity matching the "up" or light pull side, since this would remove the least metal from the hammer and leave plenty of room to reform the sear notch for a heavier pull, if needed.
Well, that was a nice idea, but it was the wrong idea.
During testing, the breech block was pulled back and when I moved it forward again, the hammer followed it down. So the trigger rode along the bottom of the hammer and was hit by the half cock notch moving full speed ahead. Broke about 1/3 of the half cock clean off.
I said some things then. And I meant every word.
Going to stone a heavier angle on the sear notch this weekend and I'm contemplating grinding the rest of the half cock off and doing without. I'm not going to be carrying this rifle around loaded, so it doesn't need to be there.
Photos when I can.
-----krinko