Artillery Barrel Specs???

[sheepherder]

Originally Posted by John Sabato

Great article...

...But wait!...There's more!!!...

I decided to make a 2nd rear sight base, somewhat lower than the first...I knew I could gain .071" by milling off the lower sight blade lip, and get another .030" by lowering the sight leaf axis...So I made up a new base...

1st pic, from upper right clockwise...

- Milling a 3/8" trough in the 5/8" x 1/2" blank

- Milling the T-slot, using a 1/8" x 1/2" Woodruff keyseat cutter

- Milling the side reliefs for the rear sight leaf

- Cutting the front dovetail

- Cutting the rear dovetail

- Milling the bottom lip off the sight blade

- Cutting a ramp for the slide (big pic)

There were a bunch of other things done in between operations...Drilling the axle hole; chamfering edges with a 45�º cutter; cutting & chamfering the "artillery receiver notch"; shortening the leaf spring...

The 2nd pic is a comparison of the 1st rear sight base with the 2nd...It doesn't really *look* all that different...but I'm hoping the line of sight will be closer to what it should be...