Nearly all my NF scope setups are held in place with NF pic rail and NF UL rings, with the exception of two and one of those uses a Near Mfg 3 ring/rail Alpha mount and the other is a NF UL Unimount.
The Near Alphamount is probably the finest setup I have ever used. It cost a little more but the quality is second to none. I used to have a Accumark 338-378 with a NF scope and no matter what I did, the scope would start moving after about ten rounds. Once I put the Near 3 ring Alphamount setup on, it never moved again.