I’ve got a Havak that I run an ATACR 4-16 MILC on for a hunting rifle, and love it. I ran a MK6 3-18 on a similar 6.5 SAUM I used for a few years, but I wasn’t a fan of the turrets. Never had any tracking issues with it, but they didn’t feel worth a damn. I replaced it with a Bushy 4.5-18 LRTSi for about a week. The glass was severely lacking. I’m thinking about picking up another Havak, and throwing a 2.5-20 NX8 MILXT on it. I may end up with another MILC though.