I like 180's in the '06. JJHack has seen a lot more game taken in NA and Africa than most other posters here and thinks the 165 is the cat's meow. He might know something...
I've been using 150's exclusively here on the open tundra for caribou the last 5 years, taking caribou out to 433 yards with good effect. And one moose at 30 yards. I started with Corelokts and they worked fine, then I went to Hornady Superperformance SST's for a flatter trajectory at range (6 inches higher, 3 inches right of the Corelokts at 300 yards). Just for grins, I'll try some GMX monos this year- tho nothing more than C&C is needed. The two years (2010-2012) prior to the 150s, I used an '06 and 180s and a .260 with 140s, respectively. Corelokts both, were effective to 400 yards on caribou.
That same .260 gun/load did just fine on a cow elk at 150 in Colorado a few years back, so I would not worry about a 150 gr '06 load, but personally? I'd use a165 or 180 on elk or moose, by preference.
I've taken maybe 10 moose with the '06, I think all with 180 C&C.
