Finally got my .375H&H to regulate with 300 grain bullets. Six shot group 2.4" at 50y but is slightly low. I shoot an oval target where the 10 ring is 2" wide and 3" tall. I got 5 in the 10 ring and one in the 9, but they clusterd around 5 o-clock. My 270s and 235s cluster in the 10 ring perfectly.

How can I raise the group without opening it up?