Yes, I own a 6.8 SPC, actually two. Please be gentle.
A buddy got a .300 BO, and got me to build one as well. Still waiting on my barrel, but otherwise it is essentially complete. Brass isn't an issue for me since I have 5k+ in LC and other 5.56 brass, so I looked around at other sites to see how folks were doing it and I found this jig hooked up to a Harbor Freight mini chop saw.
Saw a few things I liked, and didn't like, and proceeded to build a repeatable jig that just cuts brass.
Added a piece of UHMW for the end block for a definite measurement on each case.
Screwed the jig board to the base of the saw AFTER squaring it to the blade. A bit of trial and error.
Made a few more for my buddies with .300 BO's, including a "witness case" to align the saw.
I omitted the "shoulder drop hole" from my design, as it caused a few jams in my trial tests. Went for 15 minutes and was able to produce 318 cut off cases, all the same length, give or take .005".
A buddy got a .300 BO, and got me to build one as well. Still waiting on my barrel, but otherwise it is essentially complete. Brass isn't an issue for me since I have 5k+ in LC and other 5.56 brass, so I looked around at other sites to see how folks were doing it and I found this jig hooked up to a Harbor Freight mini chop saw.
Saw a few things I liked, and didn't like, and proceeded to build a repeatable jig that just cuts brass.
Added a piece of UHMW for the end block for a definite measurement on each case.
Screwed the jig board to the base of the saw AFTER squaring it to the blade. A bit of trial and error.
Made a few more for my buddies with .300 BO's, including a "witness case" to align the saw.
I omitted the "shoulder drop hole" from my design, as it caused a few jams in my trial tests. Went for 15 minutes and was able to produce 318 cut off cases, all the same length, give or take .005".