I put a euro 30 1.25-4 on my 375 Ruger Alaskan, but have yet to sight it in. It shot the 260 Accubond well with the 3-9, so I will likely run that bullet in it.
I might also use my freshly revamped, 20" barreled, M700 458 Win Mag, and 500 gr SP loads, unless I can work up a decent 300 gr load in time.
For the record, I know I do not need nearly this much firepower, but I find that I am enjoying the boomers more and more.
I could also load up some TSX for my 6.5-06, but I am letting my wife do all the killing with that bore diameter in her Model Seven in 260 Rem