So as promised I got my cutoff jig in for making my own 300 blackout from spare 223 brass. It is the cats pajamas! Insert the case on the left side of jig block create pressure with second long case. Detent engages to index brass, drop the saw. Super simple! Don’t forget you must deburr after the cut before resizing! Jig is from Zepreloading and cutoff saw is from HF! Pure genius!