My Redfield mount is strong, holds and adjusts well. When I use it with my Meopta 20-60/80 HD, It is probably near its weight capacity. I have watched for a mount with a higher weight capacity, but haven't put my hands on one. Vortex has good reviews, 5# max, so I would not use it with my Meopta(4.5#). The Nikon looks good and you maybe able to find one on clearance. Remember if you digiscope that adds weight.