I am paranoid with my loading. I use a LNL AP as well. In station 4 I have the hornady powder check die. So I am always looking at that when I crank the handle to make sure it elevates the right amount, and then I still always visually check the powder level. Sure I could load faster, but I strive for loading safer and having this double check (powder check die, and visual check prior to seating bullet).
Glad to hear you didn't get seriously hurt. I love using Bullseye and TightGroup in my 45s... but carefully check!