• Author / Uploaded
• angelines123

Citation preview

Overall length 6", .625 diameter A. .045 deep,.285 dia. This can be cut deeper, then faced off to get the depth right. B. Grooves are .125 wide C. Tab left is .125 wide D. Hole .375 dia, 5" deep E. Full dia for 3.125" F. .500 dia 2.875 long G. .375 slot 2" long, starting 1" from end H. .140 wide, .425 long, starting 3.425 from end I started by cutting the headspace on the head of the bolt, starting with an end mill in the tail stock, then a small boring bar to enlarge it. I could have cut the groove for the extractor spring then, but I didn't. Then turned it around and turned the back end to .500 and drilled the.375

hole. I then threaded the hole at 40 TPI. After the body is polished it comes out of the lathe and goes in the mill. The first cut is with a 3/8 end mill .125 deep, starting at the head end, about 2.95" long. Then I cut deeper to open up the body from 1" from head for 2" long.( Note G ) Change to a 1/8 end mill and cut grooves "B" .125 wide and deep. I used the 1/8 end mill to cut the slot "H" .140 wide, .425 long, at 3.425 from head. Extractor groove and extractor spring groove can be cut now or after the extractor is made so position can be adjusted if necessary.

Striker is .350 diameter. Cocking piece is a piece of the bolt body material bored and reamed to .501".I think everything else is clear. I didn't cut the .140 slot in the bolt body until after I had made the cocking piece so the ramp would fit right. All pieces required "fitting" to make it operate. The firing pin is a piece of 1/16 stainless welding rod. After the striker and bolt body were made I put the striker inside the body and drilled down from the rim area on the bolt face through the body and into the striker. This ensured the holes would line up. Then the pin was loctited into the striker and cut and shaped to length. The little plug screws into the back of the body to retain the spring. Spring

tension can also be adjusted somewhat by the plug.

Barrel lug was a piece cut with a 1.050 diameter to fit around the receiver and .920 to fit around the barrel. Then shaped and tapped for the Ruger

bracket.