SS109 in 16" Carbine
I stockpiled many of them starting in the early 1990's, mostly collet-pulled seconds, bought in bulk. I load them with 25 grains Ball C(2). I do most of my AR15 shooting from the various 16" carbines I have. With the rather crude iron sights on my Olympic receiver, I can easily do "minute-of-blue-helmet" at 200 yards from the bench. I don't have any scoped AR's, but suspect that my Colt pre-ban HBAR would do an easy 1.5 MOA with them with its factory irons. I recently had one of my old Sako's rebarrelled (had a flakey chamber) in .22-.250 with a 1/9" twist and I am eager to work up an SS109/M855 load for it. Should be an interesting experiment.
Brad