My son has asked to use my 6.5x55 for this fall's moose hunt. The other related threads on AH indicate that he should be fine. And the experience in Europe would suggest that too. But what I am wondering is whether anyone has any cautions about max range, min bullet size or type, max size of moose etc for this cartridge. I am planning on loading either 140 gr or heavy 160gr Woodleigh power points. My gun has a 20" barrel. He shoots fine but I don't want him out past 200 yards. Any thoughts on this would be appreciated.