.22LR Headstamp - triangle with dots in corners


I recently got a Norwegian .45 sub-cal. chamber that had .22LR already in it. Brass case with a knurl at mid case, headstamp is an impressed triangle with 3 small raised things inside it, at the corners. Can someone ID the .22? I’d like to know if it should stay with the .45 chamber.


Take a close look at one of the .22-boxes on the colourpages in the last IAA Journal (I’m out of town for a couple of weeks, so I can’t do it myself). Isn’t there a D&S (?) box with a logo which fits your description of the headstamp? -Morten-


Thank you, I’ll check that. I usually ignore .22s, but it would be nice of the .22 matches the .45.