Most of my moose I've shot over the years, has been with the 358 Winchester up north here in Alaska. I typically used the 275 grain woodleigh over 42 grains of Alliant Reloader 10x for 2200 fps. My biggest moose so far, was a 57" racked bull hit square in the chest during a charge. Instantly anchored on the rivers edge. The bullet was found in the one inch-thick diaphragm, near where it attached to the ribs. The bullet was badly distorted, but still intact. The prior years bull, was a 55" racked moose shot square through the front quarters while quartering away. The 275 grain Woodleigh drove clear through, and broke the bones of both front quarters. I only ran the 275 grainer because I could. It certainly isn't necessary. I've since switched to 250 grain A-frames over 44 grains of reloader 10x for 2400 fps.
The 358 was my first rifle, and though I've made room for a 9.3x62 mauser, I still prefer the 358 when hiking up any elevation is involved. It's a lighter rifle. There's been a lotta ballistic talk, and hypothetical thinking out lout about the 358 over the years, but not much hunting from these guys. Lot of it is in forums, and online articles, and I shake my head aye. The 358 needn't be loaded light to chase velocity, it's juvenile. The 358 gets it's magic, from a 250 grain bullet. Just for reference, the 200 grain nosler accubond or the 200 grain barnes ttsx, are longer than a 250 grain flat base bullet, no need in limiting an already limited powder capacity, for negligible gains in trajectory in the real world.
With the 358, most flat base 250 grain bullets seated to standard COAL, will only seat down to the bottom of the shoulder. They don't consume any powder capacity.
