Forgot to add this when it was actually fired, and just ran across the picture. This is from a box of Sellier & Bellot 124-grain .300 Blackout, FMJ target ammo, that was given to me by the folks at Widener's. This was fired at 200 yards from a AR15, last group of the day
I've still most of the box of Winchester .45-70 300-grain soft-points to shoot as well, but due to a situation, that'll be a while. So will more testing on some personal stuff of somewhat stiff recoil.
*As I recall, it was set to be about 1.5" high at 100.