I know the Maximum C.O.L. is 3.29 inches....
First question is whether you know that from reading it in your loading manual, or whether you have actually measured it in the rifle itself (?) If you've measured the actual
distance-to-lands (unlikely), seat it just short (~20-30 thousandths) of that.
If you haven't
measured it yourself, seat to the middle of the cannelure and crimp as normal. (The reason here is that the Hornadys have a longer bearing surface/more squared-off angle to the point than most bullets, and seating to the shorter OAL is normal.)
FWIW: When I load SSTs in my Model-70, seating to the cannelure (which sure looks
short) actually clears the lands by only 0.005")