Offhand accuracy at 100 yards

[G Tidewater]

As noted, get used to your arch of movement. Be confident that what you are seeing is ok. DO NOT snatch the trigger. Trigger discipline is very important. As you are on target and seeing the reticle moving just consintrate on your trigger press. Obviously you need to have a good stance and not be all over the place .
Another method is the approach technique . I start around the 7:30 position ( below and left of the target) and "draw a straight line " towards my intended POI . I break the shot at the edge of the plate/ ring.