Advertised weapon performance usually comes from favourable test conditions. Even a trial described as realistic can follow a script that shapes the result. A system cannot be assumed to match its sales figures in every operational circumstance. Enthusiasm for technical promises was already widespread in the 1930s.
Notable Point · 1:39:41-1:40:31
Reading weapon performance claims against test conditions
Weapon figures need the conditions behind them, because ideal or scripted trials do not guarantee the same performance in service.