I have to save some money for practice shooting at 1000yds. I am looking for info on what MOA base I would need if at all. Will be shooting 77-80gr bullets @ 2900fps from a .223 with a Leupold VXIII 4.5x14/Target knobs. Just did not want to get a 20 when I needed a 30. No need for a base to sit in the drawer.