Plano Ammo Cans (plastic)

[Kerensky97]

but it was incredibly light compared to the milspec cans

That term always reminds me of what our Drill Sergeant said to us in basic training.
"Military-specs is just a fancy way of saying, 'Produced by the lowest bidder'"

 

[WyoCherokee]

I use them for all my shotgun shells while out in the field. They are pretty sturdy, wont rust, and are lighter than the metal ones. I think i got mine at cabelas 1/2 off