Found it!

I've tried W748 and the velocity spread seemed to be as much as 100fps from shot to shot. I've pretty much settled on Varget and the 400gr Woodleigh loaded out to 3.3" seated in the cannelure. A full case gives me 2,050fps and no pressure signs. Not really sure how far out I can seat them before I run into the lands, accuracy was so good I just stopped there and quit trying to fix it.

That Encore probably kicks a mite with a 400gr @ 2,100fps load.

Keep us abreast with your findings.

Rick