Shooting 1928 A1 Thompson with 50 round Drum Magazine. The A1 had a fast rate up to 1500 but the US army got Thompson to redesign and slow it down to 800/900 rpm. The A1 takes drum and stick magazine, even a 100 round which is nearly impossible to hold up due to the weight. A 3 second burst in a A1 was nearly 1 1/2 lb lead The first influx of Thompsons where a moral booster by Churchill just after Dunkirk but the cost was too much the lent and lease came in 1942 and until the sten was manufactur