Hi VM,
You are correct buddy, well spotted mate.
I've just seen my mistake and edited it to the correct figures.
As Pianoman says though Disschord, I would always advise on keeping the scope centre as close to the barrel centre as possible. This gives you a better chance of hitting targets from the rifle muzzle to your zero range without worrying too much about mildots. This really depends on your scopes objective lens size though mate.
To keep within an inch kill zone but extend your point blank range past 30 yards you really need to use a lighter pellet Disschord or learn to