Put about 500 rounds through the 19 and about 250 through the 17, both with BOLD sights.
It doesn't like cheap ammo for grouping. Best grouping seemed to be with consistent ammo like the S&B 124gr contract ammo on SGAmmo recently, did really poorly with forged and cheap federal 9mm - both 115gr.
Will post up a more detailed thing tomorrow on my site.
Both guns were vastly more accurate than I anticipated and very comfortable to shoot.