In My ACCURA's Im shooting 105 & 110gr's of Pyro RS with a 240gr XTP Mag and T7 primers = 1" groups at 100yds. Are your DuraSight the Z2 Alloy see-thru or regular low base? I sent back my see-thru Durasight mounts as they were too high for my ACCURA, I had to bring my head up too high to see thru them right and Im 6'6" tall, let us know how they work for you and what load you choose, sorry no help on the White Hots, never used them.
(BP)