While shooting off a benchrest for small groups, do you hold your AR tight or loose, re; some benchrest shooters just touch the trigger when shooting, how do your gas guns like to be held, gentle or rough??
I have never tried free-recoil with a gas gun. I can't imagine it's a good idea. Gas guns have multiple recoil impulses unlike bolt guns (firing, bolt impacting the back of the tube, bolt closing).
I shoot my AR just like I shoot my bolt gun. I take a firm hold and light forward loading.
I don't so much shoot for tiny groups unless I am diagnosing a problem. With the ARs I am usually shooting for speed and accuracy.