What are you looking to upgrade on a Rem 700? I'm a big Tikka guy, as they shoot right out of the box. Was doing load dev this weekend, with used T3, 20" 1:8, and was .5-.6 moa with 55gr Speer soft point and benchmark, as well as 69gr SMK and varget. What's not to like? This isn't unusual with the other T3s I own.