Thats true. A moose may not be impressed when first hit even with big calibers. The often act like there was no hit at all and just walk off. They usually don't go far though. The last one I saw shot was hit very well with a Sako 300 Win Mag. The critter didn't even flinch and my buddy hit him two more times before he just walked off around a river bend then tipped over dead. This one had a 66 inch spread.