Voroni Shelf for pegboard

I've been trying to put everything on pegboards lately, and this is a shelf for me to put my powder on at my reloading station.
It's deep enough for a common board (I.E. 1x6) at 5.5" deep and is 14 1/2" wide (14 3/4" including the brackets). I had tried the shelf at 1/4" high, but experienced sagging, even with the center bracket, so I went with 1/2" high and it seems to be holding fine.
(for reference, that's an 8lb and 1lb container on the shelf.)
The right and left brackets have lips on the side to prevent the shelf from sliding out. Center bracket has only the front lip.
I made some spacers to slip over the peg nubs to level the shelf.