Thanks for posting.

That is an interesting find. I never knew that existed. If the poms had of been using that instead of their 303 in their fighters the Germans would of lost more aircraft in the Battle of Brittan. Also in the turrets of their bombers.

I know they should of gone to the 50BMG far earlier but was just thinking the .5 Vickers would of produced less recoil so could of been used without increasing the weight as much esp. in the bomber turrets. Any how that is just speculation.