Sorry cannot comment on tracking as the two older versions (not the i) that I have, have the varmint reticles (like the B&C with finer crosshairs and extra dots for 20 mph crosswinds) in them, but are great glass. On my 6.5 Creedmoor and my 250AI.
I only have one 3i scope and it is the 2.5-8x36 and is on my Ruger Model 77 KRSI 250 Savage. So far, it is performing well. Have not used it extensively yet.
If it is a great price, get it and try it. If happy, you are set. If not what you were hoping for, then at a steal, you shouldn't be out too much by reselling it. And then you will know first hand, and can share your findings with the rest of us!
I only have one 3i scope and it is the 2.5-8x36 and is on my Ruger Model 77 KRSI 250 Savage. So far, it is performing well. Have not used it extensively yet.
If it is a great price, get it and try it. If happy, you are set. If not what you were hoping for, then at a steal, you shouldn't be out too much by reselling it. And then you will know first hand, and can share your findings with the rest of us!