Ken Farrell. His rings are a work of art. Steel or aluminum, you choose. And they don't have to be lapped, in fact he recommends that you do not lap them.
NEAR are amazing for model 70 and rem 700I think Seekins are the best value when it comes to precision rings in 7075 aluminum. They offer a little more clamping area than most other rings.
The new Area 419 rings are really really nice. I like their level.
I have a NEAR Alpha hunter unimoint that is made of stainless steel. At around 4oz it's simply a work of art
Spend what you will - but all shooters are not equal, no matter what.What scope rings are you guys liking for heavy gun? I like aluminum. Always use tps 7075 rings but there not made any more