I'm looking around right now at all the actions that are made for .338 lm based cartridges . there of course is a even split between purpose built rifles like the MRAD and AI AX rifles that take double stack 10 round mags and all the custom actions like the badger , impact , Batt , Defiance that only accept AICS mags . for any one with a traditional custom action do you wish you had 10 round magazines ? and not those single stack cereal boxes , those are a joke . are the 5 round mags annoying to you or just ok