I'll add a good drill here:
Static paper with a mini-popper on each side. Shoot the paper twice, transitions to one of the poppers, back to the paper, to the other popper.
(I set up the poppers so they don't fall)
I try to get alphas on the paper and am looking to get a transition to the steel ~.4s and no misses on the steel.
I let myself miss the steel a max of twice in practice - If I miss, then I'll add a penalty: shoot steel SHO/WHO or on a balance beam or something... I.e. something to pull myself back to the front sight.