I have never heard of welding in new feed rails before. Always thought that once they were modified for a larger case that was it. Very interesting! Would love to see some photos of the work.
Kevin,
You have a lot to learn.
I agree, which is why I asked to see a photo of the remodeled rails on the gun. As I said, I had never heard of it before, so the only way to learn about it would be to see it!