Out of 450, 458 socom and 50 Beowulf the 450 bushmaster beats them all.
Who's going to be stocking .458 ammo? Currently I cant find any for sale. Usually around $2/round in the US for cheaper stuff, $50 for 20 in Canada?
I went with bushmaster based on the availability of legal 5rnd magazines and choices of available ammunition in Canada. When I did mine there was only Remington and Hornady, now there is also winchester, federal and some other smaller companies. Remington is also going to be releasing some different bullets and weights later this year. Socom is basically reload only right now and for the foreseeable future