Well, I guess its only OK if the RAF planeset gets things without Hispanos. Given that the Hispano is the main RAF fighter gun of WWII I guess the RAF should only have Hurricane Is, Hurricane IIas, Hurricane IIbs, Spitfire Ias, Spitfire IIas, Spitfire Vas, Defiant Is, Defiant IIs and Typhoon Ias.
That would solve the mythical 600 yard snapshot problem. Hell, it'd solve the "RAF planes can shoot anything down" problem too.