!!!!Sorry about the long reply!!!
Some clarifications: our club moose hunting guru (over 35 years of experience) tried many possible loads with a 270 Win and found that the best combo was 270 Win 150gr Partition with something like 90% success.
The stats themselves are from the guide and the member of his groups which used 270 Win 150gr Partition following his recommendation, of course most members of the group use another cartridge and some 270 Win hunter don't care about his recommendation but most do listen.
He has stats for other cartridges and bullets but unfortunately it's very clear that he was only interested in finding the "best" 270 moose load or finding something better than his "magical" combo.
From his experience in the field, high recoil cartridges like 300 Win Mag and 338 Win Mag don't work well at all in the hands of average hunters.
Also, the 270 Win 150gr load does not work that well past 200 yards but is extremely effective at closer range (this might only be related to shooting skill).
Finally, after years of observation, he his convinced that 308 Win 165 TSX is better than 270 Win 150gr Partition. This is based on anecdote and what he saw in the field in the last years (lots of 308 Win, lots of TSX used with great success, therefore 380 Win TSX must be great) and the fact that many of the club member have Savage, Tikka, Sako or custom 308 Win which can shot 1/2 - 3/4 MOA 5 shot groups with premium hunting ammo.
The evidence is so good that he's making the jump and will use a 308 Win Sako shooting 165 TSX reloads. He planned to buy a TRG22 but found it somewhat "non-lightweight"
I have a somewhat different opinion based on shooting too much, some analysis and not enough experience.
I hunt with a 270 WSM which I see as the modern successor to the "optimal" 7 Rem Mag.
At the club, we spent all of our non-shooting time discussing hunting, shooting and the outdoors!
Again, I apologize for the very long post!
Alex