dtech
New member
I've got a couple more of the .358 WSSM uppers to test and ship, so I figured I better get some brass ready. When I built the first .358, I simply used the upper to fire-form the brass. It made a bit of mess in the bore, so this time I decided to do it differently.
The barrel-blanks I get from Shilen are 28" long, so whatever is not used on the barrel that I am producing gets cut off. I took one of the cut-off barrel ends from one of the uppers I was building and chambered, threaded, installed a barrel-extension and headspaced it. It was VERY loud, but much easier to work with, and clean!
Here is a picture of the annealed brass before and after fire-forming, along with my little "SBR" fixture for fire-forming. I'm using a small charge of fast-burning pistol powder, then filling the case with cream-of-wheat. I am putting a plug of Styrofoam in the case-mouth to keep the cream-of-wheat from spilling out before I get it fired.
I'll try and post some pictures of the finished uppers.... Before I ship them out!
The barrel-blanks I get from Shilen are 28" long, so whatever is not used on the barrel that I am producing gets cut off. I took one of the cut-off barrel ends from one of the uppers I was building and chambered, threaded, installed a barrel-extension and headspaced it. It was VERY loud, but much easier to work with, and clean!
Here is a picture of the annealed brass before and after fire-forming, along with my little "SBR" fixture for fire-forming. I'm using a small charge of fast-burning pistol powder, then filling the case with cream-of-wheat. I am putting a plug of Styrofoam in the case-mouth to keep the cream-of-wheat from spilling out before I get it fired.
I'll try and post some pictures of the finished uppers.... Before I ship them out!