https://www.matchgrademachine.com/forum/Match Grade is who I would go with. Link above their forum, lot of good advice and solutions.
Would also suggest
www.Bellmtcs.com, to understand the simple mods needed for the T/C factory build. This, to achieve the MOA you desire. The why and what it does, and the understanding of headspace solutions, applying to reloading.
Make a list of your build & shooting wants or needs and call MGM for your order and any questions you might have. IRC, Kerry is who you will talk too. You will find him honest and suggestive for your needs. He will get back too you if he can find what he does not know, referencing your questions.
Critical for T/C accuracy on the simple fix: Head space of cartridge, correct forearm bed, interference fit of hinge pin, stronger bolt springs, and MGM barrel should get there for the 200 yd. MOA. And don't be surprised should you achieve better than that.
edit:
Question Kerry about the throat build as to length also. The throat will be cut correctly, but relates to seating bullet long or short, adding to accuracy. Assuming here - 28" barrel relating to velocity for flat trajectory: e.g. long bullets/and case capacity?
