It's possible you're not actually flinching. I've been dabbling with an LCP Custom. It's possible to shoot it reasonably accurately, but it requiresa very firm gripclamping the shit out of that tiny grip. If it's not in a meat vise, the gun will jump all over the place before the bullet leaves the barrel and send bullets in random directions. If the target starts to look sloppy, it cleans up just by clamping the grip harder and doing everything else the same.
The Taurus boot grip may be well worth the $17 it costs, shipped directly from Taurus.
I didn't see you mention having done this, but orange paint over white paint on the front sight is a major improvement for hi-viz on J frames. Tom Givens has written about doing that on his service-size Glocks.
I'm still working my way through a couple cases of wadcutter reloads from Precision Delta, when they went on sale for 25% off, resulting in $0.17/rd price.
There's a thread/post over on arfcom that has links to four different ammo price indexing sights. They are different enough to be worth searching all four. You may find some useful results there.