Here are some vintage varmint rounds. Top Imperial by C.I.L. 22 Sav is not too old, the Winchester 22 Sav has rounded primers. Originally I had 8 boxes of the Winchester 22 sav in the same near pristine condition that I sold off. I forget what I got for it but it was good chunk of money. I only need one for my collection. 220 swift will get pulled and reloaded for my Ruger Varmint/Target.