ORIGINAL: spaniel
I'd acquire some of the 300gr Noslers that sabotloader mentions since you say you are hunting moose. I would be concerned about under-penetration with the Barnes. My experience with them out of shotguns is similar to yours, they do catastrophic damage, but the price you pay for that is reduced penetration. Not a concern on deer, but moose are another story.
I'm not sure how you'd expect LESS penetration from a Barnes bullet. My experience is that they ALWAYS go through a deer when shot broadside, even if they break both shoulders or smash the spine going through. They expand a lot, and pretty fast, but they also shed little if any weight. The few people who do recover them always have near 100% weight retention, and the only time I've ever heard of a Barnes E-MZ being recovered is on long ways shots, and then the bullet usually goes all the way through to just under the hide after going lengthwise through the deer. If I were hunting moose, the Barnes would be my 1st choice BECAUSE of the penetration. I'd be extremely confident that the 300 gr E-MZ would make it to vitals no matter what part of the animal it had to go through first.
Mike