I shoot hornady 139 ammo. what is the difference in the interbond heavy mag moly and the sst heavy mag molly. The ballistics are the same, so whats the difference in the bullet. Also, I want the rifle to hit dead zero at 300 yds, so where should it hit at 100 yds? On hornady's ballistic charts it hits dead zero at 200 yds. I use it to hunt deer in north alabama.

Thanks