I never got into the stock band ammo carrier but use a leather ammo wallet on my left side (left handed). That holds eight, I start out with a full magazine but chamber empty and carry another three or four, individually, in various pockets.
That gives me roughly three-quarters of a box and I've never (yet) needed more than that in any day of big game hunting.
I did go on a thousand mile, western elk hunt once with only three rounds but that's another story.
