You might try the H4350 powder as well sir. I have had great luck with Win LR primers, and the Wolf LR primers. Brass wise, You can go with Lapua and it should be pretty close to Just Load it UP, or you can go with something like Winchester brass and you will need to sort by internal volume, and make sure to check the necks ect... a good bit of brass prep in-other-words
As for the 140gr bullets, believe it or not I have had fantastic luck with Sierra 140gr GKs out to about 800 yards! Bergers are real nice too however, but they can be a little bit finicky on seating depth.
Have a good one,