What has all this got to do with the Spitfire XIV? Just sayin ....
if you search for this discussion later, you'd never imagine it would be in a thread about the Spitfire XIV.
No, the MK 108 was internally mounted in the outer wing position instead of the 2cm cannon. the /R3 had a MK 103 cannon pod but the recoil was way too strong so it was quickly abandoned
Something of a myth.
.45 had a curved trajectory but the main problem was that most troops couldn't shoot it well. And at more than tree top height (60-80ft) many had no idea where to aim it.
They listened to barracks talk and most aimed too high.
I was going to say that even at 250 yards, a .45 ACP is still lethal.
The US Army did a bunch of testing, and they found the .45 out of a Thompson was good for about 4" of penetration against white pine boards at 250 yards. Estimates are that this would penetrate about 12" into a ballistics gel block at the same range. That's right at the lower end of the 'lethal' range. Even a non-lethal hit is going to mess up anyone that's not wearing body armour.
Add in the fact that you've got the extra forward velocity from the firing aircraft (~275 fps), plus the fact that gravity is helping and range isn't the issue people think it is.