Sig. 226 .40 , stock sites, Xtreme plated 180 gr, 5.3 gr Bullseye
But mostly a broader question I think you answered. I have a Sig 220 with X 200, 5.3 gr 231 that runs very well, but I'm better with that gun with just about any bullet. But even with that I'm not 1.5", more minute of paper plate.
I vary and ladder rifle a lot .308, 45-70, .270. I'm probably not going to shoot at 50 often enough, well enough to do that with a handgun. I have a match barrel in a .225, I'm amazed at how bad some ammo is doing, only one has done really well out of the box (Norma $8.99/box).
I have not tried "precision" handgun. in 9/40/45 I wasn't even sure what that was. tx