I have tried many different powders for my .223 bolt action, W748, H335, H322, AA2230, AA2460, H4895, IMR4895 and a few more other than Varget cause it has never been in stock. No matter what I try I can never find a better load than with the first powder I ever bought for my .223...H335! I must say I absolutely love this stuff. I can shoot 1/4"-1/2" groups consistantly with this stuff out of my Ruger M77 VT. I was tempted to buy some Varget yesterday as it was in stock at my local gun shop but ended up just picking up some more H335 as I didn't think I could improve on my results. I'm kind of sick of buying new powders to try to only find out that my trusty old H335 out shoots them all. I probably should've bought some Varget to throw on gunbroker to make a little extra cash, that's just not my style though. I left it there knowing someone needs it more than I.
Moral of the story, if you're looking for a new powder to try out then I would highly reccomend to test out some H335. Burn rate is a little different than Varget. I shoot a lot of 50gr Vmax as well as piles of Sierra 52gr. HPBT matchkings with it.