Hello Jason,
First, did you do a good cleaning of your barrel when you got it home form the store ?
Second, check the stock screws, make sure they are tight.
Third, I would remove the scope and mount, clean off the scope mounting rails with alcohol, have a nip, clean the scope mounts,bolts andand the scope tube with alcohol. Put it all back together using thread lock blue, lightly on the threads and put some on the area of the mounting rails that the scope mount will attach. Let this all sit overnight.
Fourth, You may need to get yourself a pellet sampler of different pellets to test in your rifle. air rifles are very selective on the pellets that they like ! And after 1000 pellets or so this can change.
Bill