I received five boxes of 17 Hornet ammo Lot # 3140740 from Midsouth this week which has ben back ordered since March 2013. The primers are crimped. In December 2012 I purchased five boxes of 17 Hornet ammo with concave bases. I cant tell if the primers on those bases are crimped. I sited in my new CZ Mdl 327 Varmint rifle last week and shot a few prairie dogs. I got sub 1/2 inch 100 yard groups with the ammo purchased Dec 2012. I have one box of empty brass but I have not neck sized the brass yet. I ll use a primer pocket reamer and inside flash hole de burred to clean up the cases. It wont take me very long to shoot 225 rounds I have left when the prairie dog pups come out about the last week in May. I ll start reloading after I have shot the five boxes I got in Dec 2012.