Also, and unrelated to generic trigger control, I shoot an XD better than just about anything. I need to keep exploring that. Sell both the SIG and the 1911 and buy a few of the exact same XD model, a primary and spares. Maybe that's just the gun for me and has been all along. Of course I had to tread this path to make this discovery. Had I bought an XD originally I'd have gotten a hankering for other types. But then I'd return back to the XD if I really was best at it, wouldn't I?
I should give up the conceit about my favoring other pistols and just go with the model I shoot best, now I that know a bit more, and better. Even go so radical as to ditch my .45s and stick to just .40.
Here is a target showing the comparisons with my .40 Sig.
Heck, XD is the model I recommend to new shooters.
But it requires more and extensive testing. Borrow/Rent an XD and shoot 200 rounds, solo, in one session, and see if it holds up. Why did I get the Sig P229 in the first place, after all? I shot a buddie's and I was really accurate with it, and liked the feel. I need to confirm it's not as flukish with the XD like it may have been with the minor 2 magazine exposure to the Sig prior to purchase. That's it's not just a matter of the planets aligning.
So much for my favorites and trying to get away from thinking about gear upgrades/changes. But I won't rush.
Added plus? The XD is slimmer than the Sig, and I'd been wanting slimmer...
Another point... when I get the trigger thing perma-fixed, that should drift the shot group from low and right to just a little low. I'm low because of anticipatory push. Pre flinch, drops the muzzle. That's gotten better over time, but it will be there if I don't fix it, too. I dunno why I don't have XD anticipatory push. It's probably because I don't know when the trigger is going to break on the XD because I haven't shot one enough to find it. Whatcha bet if I had 500 rounds through one I'd drop the group? A point against rushing out and buying one or three.