I own a couple of these and I talked my buddy into one as well. All 3 most definitely are biased to shoot left. Benched, offhand, it doesn't matter, they shoot left. The sights are so tiny that to my eye it is tough to see that the front and rear are drifted correctly from the factory. One of them it was pretty easy to see the rear sight wasn't centered but the other 2 looked pretty close.
That is the bad news. Here is the good news. I use a MGW Sight Pro or something like that. It is their nice one that uses "shoes" for each brand. I broke down and bought the $14 shoe for the original BG 1.0 and it worked perfectly for the 2.0. All my guns now shoot dead center. Since the dovetails are so small I drifted the rear one way a bit and the front the other way a bit. The first correction attempt I just moved the rear only and it (groups) were centered but the rear sight looked noticeably not centered so I did the aforementioned front and rear and to my naked eye the sights look normally centered. Alas, it's a small gun so you have to be flexible solution wise.
As for the low impacts I would figure out what hold you are using as a first step. On my Sig 365 they quite clearly are the "combat hold" nonsense. Line up the sights, cover the target, and the bullets hit behind the tritium dot. I expected the same from these sights. On both of mine with the standard equal height equal light the bullets are impacting exactly to the tip of the front blade, ie POA = POI. Those are my two using Magtech and S&B.
