I got some odd ball cases in a trade,that I can't use,so I'm passing them on to someone who needs them. They look like some sort of PPC round. I presume a 6mm. The base case is a 220 Russian,Sako Brass. overall case measures 1.495" w/.243 bullets in them. The cases are not primed. They seem to be trial overall length rounds. there are 5 rounds,which vary in length from 2.062" to 2.115". Anyway, first ( I'll take it) gets them.