G.T.Garwood's article arose from a controversy in the 1960 when Eley-Kynoch started loading their Grand Prix game cartridge, intended for 2 1/2" chambered guns, in a 2 3/4" case with a crimp closure. There was a lot of correspondence generated in the sporting press at the time as to the possible risks of such a practice. Tests showed that there was no real discernable difference provided that the loads were kept to the same overall pressure. Lagopus.....