Long ago my Dad had me shoot up some old ammo. One of the boxes was 22 rimfire filled with mustard seed. He said it was for shooting mice inside a barn so you wouldn't put holes in the structure.
They put holes in the paper target, but would barely put a hole in a clay pigeon at 5 feet.
I wish I had kept at least one for my cartridge collection.
Well now I just bought some speer capsules for 38, got me to wondering about the mustard seeds.
Does anyone see a problem with trying out a shotshell filled with the seeds? I already have a handful made up with number 4 and number 8 shot scrounged from some old paper hulled shotshells.
Also, what size buckshot would work in place of a gas check or wad atop shot if not using the speer capsules? Coat the buck with lee Alox, wad or check over the powder is my idea?