I can't find much fault with the 150 grain partition or A-frame but if you haven't yet try the 160 grain nosler partition I know it is very popular with the .270 (both original and WSM) users I know for moose. I also wouldn't be too concerned achieving 3100fps MV either, these loads have killed a pile of moose at .270 winchester velocities. A tough premium bullet is a great thing if it gives you the warm and fuzzies and shoots well enough to give you confidence.
Honestly if push came to shove I would be comfortable with a 150 grain Hornady interlock loaded to around 3000fps. If it shot the best. Now before you discount me for living in moose country keep in mind that here we only have a 5 day season and it takes a very long time to get drawn.
