Hi can anyone help me with these .303 blanks. I bough these two at an ECRA meet in 2009. I was told they were stoppage blanks for the Lewis & Bren. I'm not too sure. Can anyone help. The Bren rnd has a black wood projectile and the Lewis a light green projectile. Both made by Kynoch in the 50s? Any help would be appreciated. Shawy.