RE: I need serious help with my slug gun!!!! PLEASE!!!
If you adjust the scope and hit the same place you did before ethe adjustment, you have a scope or mount problem. The scope is new, so it's more likely the mount, but you never know.
If it were me, I'd tear it down, loctite the mounts/screws down and start over.
Of course, shoot only sabots or hybrids. If you get poor accuracy, switch to another brand of ammo. My gun loves Winchester 2 3/4 inch BRI's but hated Hornady H2k. You have to try them until you find one that groups.