At or above 2550fps should keep you at 1250fps at target (1000yds) and should trigger an acoustic target sensor array. N150 has worked well with 200-20X in a friends F-TR gun....won the 2018 LR Nationals with it.
My barrel length is 24". I have exactly the same rifle that you have. For me 175gr Matchking worked extremely well in accuracy, but my most accurate load was overpressured and I had problems opening the bolt. So I discard it. Did you have better results with 175 Matchking or with 175 Tipped Matchking?
Both the 175gr Match King and 175gr Tipped Match King shoot great , nearly to same point-of-aim at 100 yards , when loading Varget or IMR 4064 . However the 2 different powders did not shoot to the same point-of-aim , due to slight difference in muzzle velocity . I have NOT experienced any problems of hard bolt lift .
I used the old 175 AMAX with IMR 4895. I dont have my books out but it was on the 43 to 44.5 range. I was running a 26 inch barrel same twist as you and it shot fine. It was over 2700fps with that load. I didn't shoot any comp with it but I used it a lot to shoot steel at 1000 yards or small rocks when out at some of my shooting spots.