Neither the 6.5x55, 7x57 nor the 8x57 were 'made' for heavy game. They were military ctgs. that work very well indeed for 'heavy' game. One needs only use the appropriate bullet for the job at hand.
: One would no sooner use a lead and guilding metal jacketed 125gr. in the .300 for moose as he would a 120gr. in the7x57. With the appropriate bullets, either is capable of taking the largest North America has to offer. One need only hit them in the appropriate place with a good bullet.
: Just about any centrefire ctg. is capable, in the correct hands. The Indians here shoot many moose each winter, using their single shot or bolt action m60 Cooey .22LR's - and with lung shots, too. In the winter, the moose rarely go more than 50 yards off the road they were shot on when so struck by several HP's. Good moose ctg.? - No - that's a silly statement, but so stating the 7x57 is not a good big game ctg. With appropriate bullets, the little 7 is as good as is needed for most aminals.
: Governments really tick me off with their FPE and Joule requirements. It shows they know little of actual killing power by attaching #'s of little meaning to ammo.
Daryl