Have a 257 Weatherby,shooting 110 Accubond handloads @ 3250 fps dead on at 200, -5.6 @ 300 and -16.5 @ 400 and -33.7 @ 500 yards according to a LEE load program. Have a one piece EGW weaver style base and warne quick det rings. The scope is a Sightron 4x14 with 1/4 in clicks and 60" of travel. Okay here's my questions. If I know the yardage to the target can I simply say @ 400 yards just turn the elevation knob up 16.5 clicks up hold dead on and shoot??? Also with the scope mounted and sighted in I have about 42" of elevation clicks up. Can I shimm the rear and get more elevation clicks?? Because according to my chart I max out at about 540 yards. I would like to shoot out to 800yds. Thanks ahead for any help. And please keep the answers simple I suck at math and mil dots!!!!!