I’m an informal target shooter and plinker. At 30 yds I can shoot a one hole group with TX-200 with a Leapers 3-12 x 44 rifle scope from a bench rest. Problem, the group moves when I switch targets. Example, 1inch target with 1/2 inch center ring. 5 targets can be side to side or any other configuration. First group at 6 oclock low, one hole,can be either in or out of the 1 inch target. 2nd group, 2 o’clock maybe inside the target all scoring, 3rd group shotgun pattern, maybe 1 or 2 in others outside and so on. I can take a powder burner and get consistent groups. Not so with an airgun, rifle or pistol. Any ideas as to what I’m doing wrong?