If you don't mind the extra weight, I'd suggest a one-piece 20 MOA steel Picatinny base from TPS, EGW, Badger Ordnance etc. I much prefer ones with an integral recoil lug as I mentioned since it takes some stress off the base screws. Also, I prefer bases that extend forward of the action since it allows me to move the rings further forward. Here's the thing, if you buy the right base to start with, you'll never outgrow it. I have steel one-piece Picatinny bases on both of my Remington 700s set up for long-range shooting. I have aluminum one-piece Picatinny bases on a Savage and another Remington 700 both of which are primarily hunting rifles.