Speaking from a "factory" load position, I do have a question or two, regarding the OP.
1) Do Custom Reloads, in a tweaked pistol make "that" much of a difference.
2) Would "factory" loads, in a tweaked pistol, be "that" much different?
From my own tweaked 1911 exp. I can shoot milsurp ball, Wolf, Federal HST's, Georgia Arms, Blazer, Winchester, etc,... and only blame myself for not shooting better. The pistol is combat accurate, a tack driver, if I shot better,...and I was curious as to performance.
I'm just asking, as my shooting partner is going to start reloading soon, and I want to kinda jump in when he does.
Thanks.