I added compensators to my ar15's and the grouping went out window . I know the harmonics have changed but from 1" to 8" at 40 yds is radical.
16' bbl. 1:7 twist
62 grn. powder coated gas checked cast coww
21 grn. IMR 4895
Any input would be appreciated, should I go up in the charge or just do a new ladder test ? I cant hit the broad side of a barn from the inside.
CC