[quote]gamgjm Posted: Tue Feb 26, 2008 8:01 pm
Like rimfire think the cartridge may be a centerfire. Have a proven rimfire with raised back to back G at 6 O’clock, star at 3 and 9 O’clock and 5 mm at 6 Oclock. Neat way to prove the inside is to have your dentist x-ray it. Mine happens to be a shooter so had no problem. No it will not go off with an x-ray.
I have a 5mm star crimp blank dummy with a raised GG (12 O’clock) Stars at 3 and 9 O’clock and 5mm at 6 O’clock. I always assumed it too was an inside primed centerfire. Are all 5mm with this headstamp rimfires? I’m sure JP could help out on this one.