I did some more shooting with different factory ammo and reloads, to have some hard data for the magazine article.

I was able to get down to average groups of 2.3"-2.4" at 25 meters off sandbags with the best two reloads.

My Les Baer 1911 I used for reference shot those same loads to 1.3"-1.5" average.

Bulk ball ammo seems to be a 3"-inch affair in this gun, I tried several manufacturers.

Groups of 2" inches are good enough for action shooting, but not for bullseye.

I will post more detailed information in a few months, after the magazine article has been out for a while.