First bolt action to buy with sniper matches in mind

Hey, all. I would like to get my first bolt action. My experience until now is AR15 out to 550. I don't reload yet, but have a press and working on acquiring the rest.

I'm not sure about caliber (6GT or 6.5CM) and rifle weight. Eventual goal is sniper matches like Mammoth or Coleman's Creek. There are hardly any NRL Hunter matches near me, so not as big a consideration. But, weight is a concern because of the potential for rucking, as I'm a smallish female. To be honest, I don't know if I'll ever be able to manage rucks with 50 lbs, but I'd like to keep the possibility open. Maybe I'd also do some PRS matches.

I'm considering an MPA Hunter Comp. I was initially thinking 6GT. But for Coleman's match (and NRL Hunter), I think the rules would require 6.5CM (or 308, 300WM). I'm concerned about recoil control and learning on a lightweight Hunter Comp (the whole thing with optic under 13 lbs). Thoughts?