Originally Posted by spaniel

You're describing exactly why I would be afraid of lack of penetration...they expand wide and fast and retail all the petals/weight. The wide frontal area retards penetration, it's straightforward physics. I would be careful about extrapolating experience on whitetails to a moose, a moose is MUCH bigger obviously and therefore if a bullet has a weakness in the penetration area you're more likely to see it.

I've never shot Barnes out of a ML but my initial experience with with the shotgun version. Truth be told we recovered 4 of 9 slugs we shot into whitetails, all within 100 yards, the first year my hunting partner and I tried them. I had one either explode or open and deflect on the outside surface of the shoulder blade of a yearling and fail to penetrate the bone on a broadside shot, that was one of the ugliest tracking jobs and experiences I've ever had as a hunter. This is why personally, for bigger game, I'd go with a bullet giving good expansion but to a more reasonable extent like the Nosler.

Expansion is good, but there is such a thing as too much of a good thing. This is why they use solids on large African game, because the more expansion you get the less penetration you get and you kinda need to maximize penetration on things that can eat or gore you.