Check your gun fit
This more than any target, as you drive the gun up with the bird, will highlight problems with a low comb height. Pushing your gun hard to your cheek could cause your lead eye to be positioned much lower in relation to the rib. This can cause misses to the side as the opposite eye takes over, or behind as perception of lead will be decreased. We also see people who don’t mount the gun correctly to their cheek but rather float their head above, then we see a miss in front and a lot of inconsistency.