I guess I should clarify my argument about the Spitfire weapon advantage.
The Spitfire with 2 x 20mm Hispano II and 4 x .303 Brownings was putting out 133.2 lbs of projectiles per second.
The 109G2, with 1 x 20mm Mg151 and 2 x 7.92 Mg17, put out 64.4 lbs of projectile/second.
Thats better than double the weight of projectiles per second. Add to that a 2 x 25% greater explosive charge of the twin 130 gram Hispano cannon shells vs the 105 gram Mg151 shell, and the 880mps velocity of the 20x110 Hispano vs the 725 mps of the Mg 151 20x 82 and you see quite a marked advantage to the Spitfire. All those numbers from this website:
The WWII Fighter Gun Debate: Gun Tables
But, KK makes a good point about the 13mm armed G6 onwards, that gave the plane 94lbs/second, with the E wing Spit at 130.8lbs/sec and B wing at 133.2lbs/sec.
Better, but still not equal. (the l/s figures for the.50 mg on that site are incorrect)
The .50 is 880m/s, (130m/s faster than Mg131) same as the Hispano, so that would make aiming simple for the first couple hundred meters.
Stick two wing cannon gondolas on the 109 and you get 124 lb/s for G2 and 154 lb/s for G6> with subsequent loss in other performance areas.
Nobody is voting for the ABCD 109, those models were the absolute best monoplane fighters in the world during their time weren't they?
