I hope someone can tell me about these two headstamps:
The Speer case is from a batch I bought new/unprimed in the 1972-1980 timeframe. I realize that Speer sold SPEER-headstamped DWM-made ammo as early as 1968 and these cases did come in/with yellow hard plastic 20-round slip top box, which I retained. The Speer labels, alas, are long gone, so no lot number. I also remember that the label read “Made in Canada”, which didn’t make sense to me at the time. The Federal case with lower case m’s is probably from the 1960’s but my father stored them in a Remington box/styrofoam tray, presumably because the Montgomery Wards or Sears box they came in, with flimsy folded paperboard tray, fell apart. Anyway, both cases have almost identical weights – 158.0-gr for Speer, 158.4-gr for FC. 2009-vintage FC 7mm Mauser cases average 189.0-gr, and have upper case M’s. Since Federal 9mm Luger cases had the upper case M’s from the beginning, I wondered if this batch of FC 7mm Mauser cases was made by somebody else? Perhaps the same manufacturer as the Speer cases?