While preparing some ballistics data for the bailey 2-gun match, I ran ballistics for both my 77gr SMK ammo and standard 55gr M193 ammo.

I don't have access to a chrono, so I'm just using velocity data I gathered from the net...

Starting with the rifle zeroed for 100 yards, I was surprised that the ballistics calculators show I need to come up less for M193 than for the heavier 77gr match ammo. I assumed the heavier bullet would shoot flatter.

For M193 I'm using a velocity of 3200fps (from my 18" barrel), the calc shows I would need to come up 11.6 MOA.

compared to the 77gr, I'm using a velocity of 2700fps, the calc shows I would need to come up 14.9 MOA