Having had a look about on the internet, I found some conflicting information, so was hoping there may be someone on the forum who could give me a definitive outline of the weaponry carried by an Me109E in November 1940. More specifically, if of any assistance, this would concern Me109Es of JG54. Would it have simply been 2x 20mm Oerlikon cannon and 2x 7.92mm machine guns?

Further, can anyone give me an indication of the velocity with which such rounds would have hit one of our Spits at 20,000 feet. Not sure if I need to be that specific, but they're the parameters. I appreciate it's impossible to be exact and that this could have been dependent upon several factors, but a bit of an idea would be appreciated, please.

Please note that I am not interested in later model Me109s, thanks; just this specific type.