End of the day, I was running some drills that involved a slide lock reload with a Glock 17. I most recently have been shooting a Sig, with a JV trimmed slide stop, and had the slide stop manipulation with my dominant right thumb squared away.
Perhaps 1 in 10 slide lock reloads, I managed to get the timing wrong and drop the slide on an empty chamber with the Glock.
My thinking is given the rather low probability of having to make a slide lock reload with a high cap pistol outside of drills or games, the highest reliability method of dealing with a for real slide lock reload might be use my support thumb, or slingshot (my choice)/ overhand the slide?