Manolito - loaded properly, the litle 7x57 is quite effective on Moose and Elk. It is perhaps the best all-round calibre for ungulates.
: 175's at 2,550fps or 160gr.Partitions or Triple Shocks at 2,620fps for moose/elk, down to 140 gr. bonded bullets 120gr. bullets at 3,100fps for long range deer, the little 7x57 will handle all of them.
: Is it optimal for every head mentioned, no. I prefer my .375 for the big ones and the .458 for big bear, but the 7x57 will handle every one, quite easily.
: The 'premium' bullets available today, have raised the bar for many of the 'smaller' rounds, making them quite suitable for game previously though out-sized for them.
: The success of the 6.5x55 in Sweden shows it is a good moose ctg. and that would include elk.