It is a 7 Rem-MagThose look fantastic WestKyHunt! Tunable for sharing. How are you liking your Vanguard? What is it chambered in?
Don't underestimate Brockel....I've used a number of different brand's of bases and rings. The one piece Leupold and Redfield are my favorite but in truth, every set of rings and bases I've ever bought has worked fine so long as they were made for the rifle I put them on. Have to admit I got a set of aluminum Tasco years ago that were the most butt ugly things I ever saw but, they worked! As much though as people put into setting up their rifles it's amazing no one has ever shoot a .000" group! I believe that we tend to over think a lot of things about guns and shooting. If not, where's that .000" group? I don't think it's even been done with a machine rest!
don't think I've seen it mention anywhere. Little known fact about the Burris Bros. They both worked for Redfield in Denver before going out on their own years ago!Can’t go wrong with the Talleys or Leupold rings that have been suggested.
For the sake of variety, I’ll add Burris Signature Zee Rings. I have some on a .30-06 and they’ve given many years of reliable service without any issue.