I finally finished my casting, but I feel I may have ruined it.
After shooting 50 rounds through it, I noticed the very tips of the lower lugs were being peened over by a small ledge I left when machining (thought I had cut low enough but didn't :O ) So I went in with a tiny endmill to clean off this ledge that I have left, but I accidentally hit the back wall.
So, if you followed the preceding ramblings, is it ok for the link to stop the rearward motion of the barrel or do the back of the lower lugs have to seat upon something solid upon recoil.
If that's too hard to follow, I can get some pictures up.
If the link stops the barrel, it will stretch or snap the link. It needs to stop on the frame. You could try welding it up and re cutting it.
Yea Eric hit it on the head, the link just unlinks the barrel but the frame stops the rearward motion of the barrel.
Maybe you can machine it flat and silver solder a slug to bring it back where it needs to be.
Thats what I was going to try. Not having a TIG machine here (although I'm quite good at it), I'll just machine a small insert then either solder or epoxy it in or something. I just feel I won't be able to get a good amount of heat to solder it in.
I don't want to seem stupid here but I thought the barrel could stop either against the top of the frame or the lug area of the barrel or both.
Whats right?
Sometimes they end up hitting on both, But I believe optimum is to have the lugs of the barrel hit the frame stopping rearward motion... Because of the swing of the link, this also regulates downward motion... I am not sure how much clearences there are supposed to be though.
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barrel could stop either against the top of the frame or the lug area of
the barrel or both.
Let's pretend you took out the frames vertical impact area, where the barrel's lower lugs hit and stop its rearward motion. If you did this then the barrel would impact the top of the frame and at the same time stress the barrels link over time eventually breaking it. The link is designed to unlink a barrel not stop it.
While a barrel might impact the top of the frame it is in no way stopping the rearward motion of the arcing barrel.