The muzzle grinding in the lathe is on a 458 Lott, M70.
The barreled action in the jig is M98. Lothar Walthar barrel, 9.3x62. I got tired of playing games with sight base alignment when silver soldering, so I made up the jig. Make things a lot easier, and the sight bases are square to the bottom of the receiver, which they should be. All mating surfaces of the jig are machined, including the bottom, so I can mount it on the vertical milling machine table for drilling and tapping. All the materials came from the junk boxes in the shop.
In this photo I am milling the V-blocks in my small horizontal Burke Milling Machine. An old machine but useful in the gun shop.
Another view of the jig in the photo below. Look close and you will see the set screws in the two rectangular bases. The v-blocks have a 3/4" diameter stem that mates with a bored hole in each base, the set screws are tightened when the barrel is aligned properly. The block to the left that the receiver clamps to has a row of drilled and tapped holes in the bottom and is secured to the base plate with countersunk socket head screws. Allows horizontal adjustment of the barreled action so the muzzle end is near the front pad for the squares used in aligning the sight base. The barrel in the jig is another 9.3, this one will be used for a long range 9.3x64 with a 28 inch barrel. The chamber will be long throated for those long Barnes TSX bullets. The rifle will be built in the South African "Cape Rifle" style, complete with iron sights.
Barrel in the foreground is a Shilen 338, it goes on the Ruger Tang Safety action in the photo. Chambered in 338 Win Mag, throated for the 210 grain Nosler Partition. The rod through this barrel has seals on the muzzle and breech, to keep bead blasting grit out of the bore. This rifle will be matte rust blued.
