TexasCHLforum.com

I'd surmise that if rounds are hitting towards the 12 o'clock of the point of aim, it's more likely attributable to a flash sight picture (intentionally only acquiring the front sight during rapid, close-in engagements) or to an improper sight alignment if attempting deliberate, aimed fire. The point of impact will be whichever direction the front sight is oriented when the round breaks.

I've seen the tendency to tighten the entire grip concurrent with the trigger squeeze during stress engagements ("heeling" the gun, or tightening the muscle below the thumb) result in a 6 o'clock POI, or tightening both the grip AND squeezing with the pinky finger result in a 7-8 o'clock POI for a right handed shooter (4-5 o'clock grouping for a left-handed shooter).

I'm wondering if the DPS switch to the B-27 & concerns of shooting high were around the same time they adopted the .357 Sig. With the higher recoil of the .357 Sig, I can imagine some new Troopers having difficulty with recoil management & lack of follow-through resulting in shooting high.