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I bet the ballistics on that look pretty darn good too!

You are asking a better question now.

You will need a case larger than a saum, wsm or Rem mag I'd say. As you will have to down load a larger case to get the velocity you want at lower pressure.
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I run my 284 T3 at 3.190 with 162g Amax

I believe h1000 (AR2217) is a bit easier on barrels anyway. What's your intended application. Barrels aren't really that expensive.

7mm Rem SAUM

Mine pushes 162 amax at 3k from a 22" barrel. Just over 7 lbs scoped. Recoil is stiff, def need a brake or decent suppressor to take the edge off it.