I was given a box of old stuff a couple of years ago. It was ex-military issue Eley 12 bore tracer ammo that was used to train R.A.F. air gunners the principal of lead shooting clays with them. I already had some in my collection so was not concerned with these as the brass heads were corroded with verdigris. Out of curiosity I took them clay shooting at 25 sporting clays. The score 23 out of 25 with one miss-fire. More than half still showed a visible tracer too. Over 70 years old and still shot o.k. Not so with some ex WWII .22 rf. which hang fired or failed on almost every round; they looked well stored too. Lagopus.....