Grip support really doesn't have much to do with hitting your target. A tight, firm grip will help you recover the front sight back on target faster, but as long as you are not milking the grip it really won't affect where you are hitting. If you pull the trigger without disturbing the sights, you will hit the target.
Hmmm interesting. I'm perplexed. Ill have to get to the range soon and run through some paper targets to get an idea of where it is I'm hitting