Im using a Craftsman 16 1/4 tool organizer box.
It has 2 removable tote trays , 2 clear compartments on the top. It is the best tool box Ive ever used for shooting at the range. It was only 25 bucks.
It has plenty of room and divided storage.
Im getting a couple more for my ohter shooting interests.
It sounds small but I cant believe how much stuff I have in it.
2 lbs powder 2 boxes lead roundballs
assorted tools
patches,spray bottle with ballistol mix,stapler
powder measures ,flasks, jags,you name it, and it fits easily.
The removable trays are locked down on the 9 inch deep base.
It doesent sound big but it has over 1300 cubic inches of storage.
Look at one when your in Sears
or
http://www.craftsman.com/shc/s/p_10155_12602_00959307000P
Item# 00959307000 Mfr. Model# 59307