The ONLY way you will be able to answer this question is to buy a pound of each type, and work up loads. If you're serious about competition the cost of 2 lbs. of powder isn't going to set you back.
When I buy / barrel a new rifle, as a rule I buy EACH type of powder it can shoot, along with EACH projectile
that should work well with the twist rate of the barrel. Then I spend a loooong time, and go through a lot of 9V batteries for the chronograph, to find what it likes to eat.
The peculiarities of your exact rifle's headspacing, chamber, lands, finish lapping, crowning, twist rate, barrel length, and other interior ballistic harmonics which will dictate what powder / projectile / seated OAL / velocity will work best for your rifle.
If you do not take the time to go through all of the possibilities in a controlled (and safe) fashion, you are merely guessing or (worse) assuming that what you have is "the best". Sure, you skip the process, try a few combinations, and say "good enough" on one of them - I have done this many times myself, and there's no harm there. I say controlled, because if you don't pay particular attention to environmental conditions, all of your work is for naught because results won't be comparable.
If you are looking for absolute truth, if there is such a thing, you have to go through the process to find it. No Internet message board is going to short-cut this process for you. It may give you a starting place, but it may also give you bias which can skew your results, compared to objectively exploring the possibilities on your own.
Regarding what will work in your expensive custom built match rifle, you may find results in unexpected areas. From my experience, I found a "sweet spot" on Sierra BTHP MatchKing 180gr 308 bullets for my 300 Win Mag with one particular powder. It took two years of testing, endless hours of meticulous brass sorting and case prep, and a couple of thousand dollars in components, tools, and equipment to get there. In the end, out of a commercial factory off the shelf barrel / action, I was able to put down consistent .25 MOA 10 shot groups with that load (with some occasional larger groups on bad weather days)...
Unfortunately that was the end of the barrel's life, and now I get to start all over again with a new Krieger next summer.
Make no mistake, the fun is in the searching, not the end result. Once you find what you're looking for it all does get quite boring. If you have neither the patience, time, nor money to go on the adventure of truly working up a load for your rifle, you are setting yourself up for disappointment.
Just my .02.