I've been thinking about adding a .260 for a few years. Wouldn't bullet construction play an important role in this? The sectional density of most .264 bullets in the 125-140 grain weight range are very similar to .308 bullets of 180 grains. Just looking at Nosler Partitions, a 180 grain .308 has a sectional density of .271 and a 140 grain .264 has a sectional density of .287. Partitions are pretty tough bullets. If a .308 Winchester or .30-06 pushing a 180 Partition at 2500-2700 fps is fine, why would a 140 Partition at 2650 fps not work? Even stepping up to a 220 grain Partition the sectional density of that bullet is .331. I'm a novice hunter and have never hunted moose so I have no clue what I'm talking about. I browse hunting forums a lot and always see recommendations for small cannons for all kinds of game, why?