I have recently purchased a new Zeiss 3-12x 56. Ht scope with ballistic turret. I have fitted it on a Sako 75 in .270. I am using Federal fusion 130 Gn ammo. Zeroed 1cm high at 100 metres. I have been on the Zeiss website and they suggest to use the pre marked ballistic ring 3. Has anyone else set up this scope on a 270 with similar ammo ? Any advice would be much appreciated. Nb Happy New year and good hunting for 2015.