All I've ever shot with it is Remington Cor-Loct 150 gr'ers. With a scope from sandbag rest, it'll just barely do 2 1/2" at 100 yards. Now I know the 336 is not a long range sniper rifle, but it seems that 2 1/2" is still not what I'd expect. And yes, I've checked scope, base, and rings. All good. This is no huge deal. My shots are 75 to 100 yards and 2 1/2" will do the job. But...

Are those flat tip bullets just not all that accurate?

Are 150 gr Cor-lokts just not accurate ammo?

I've read some time elsewhere that the 336 will do better with 170gr ammo. True?