My problem is the precision in my new rifle. The action rem 700 barrel krieger 1/8" in a McMillan stock. Made by a good gunsmith. the smallest groups is 20mm at 100m. I´v tested a lot of bullets and powders. What kind of precision is accepable in a gun like this. My friend has a rifle in 6mmbr norma also when we tested both of them his rifles groups is only half of mine with every tested ammo. Should i complain to the gunsmith? What shell i do?