I whipped up this little gizmo this morning to hold 5.56 brass for trimming to 300 blackout.
I started with a piece of 1/2 square bar stock. I trimmed it to 2" then drilled all the way through with a #3 bit. Next I went 1.600" deep with a .375 endmill.
Then I tapped the remaining .400" of the #3 hole to 1/4-28 and drilled and tapped the top for a 10-32 setscrew. I then put it in the mill and removed .100 from most of the top, leaving the two ends intact.
Using the allen head bolt I can adjust it to what ever length I want and lock it down with the setscrew. By having the top open I can keep the brass from rotating while I'm cutting.
Total cost was $1.46 for the two screws
I started with a piece of 1/2 square bar stock. I trimmed it to 2" then drilled all the way through with a #3 bit. Next I went 1.600" deep with a .375 endmill.
Then I tapped the remaining .400" of the #3 hole to 1/4-28 and drilled and tapped the top for a 10-32 setscrew. I then put it in the mill and removed .100 from most of the top, leaving the two ends intact.
Using the allen head bolt I can adjust it to what ever length I want and lock it down with the setscrew. By having the top open I can keep the brass from rotating while I'm cutting.
Total cost was $1.46 for the two screws
