I have a new Remington .223 700 sps tactical in a Grayboe terrain stock with a Leupold Patrol 3-9 scope. I'm shooting off of a sandbag and getting only 1-1/4 groups at 90 yards and 1-3/4" at 150 yds. I'm shooting Hornady 55 gr varmint express. I'm going to try 69 grain SMK BTHP and Federal Gold Berger 73 gr to see if the heavier bullets are better (1 in 9 twist). I haven't shot a rifle in a while and think it may be me. The groups are not all in the same quadrant which makes me think it is me. I also think the scope isn't level. Any thoughts? Should I try to level the scope myself? Thanks in advance!