'Merica used fifty cals, therefore everyone else was obviously behind the times. If Lockheed had any sense, they would have put 8 fifty's in the F-22's wings. The trend towards 20 and 30mm cannons in fighters, is just Europe trying to force metric on everyone
Issues continued with 50 Cals into 1943. The P51B had some minor issues which the British and Americans worked on. The solution was similar to the solution found with British cannon because the problem was the same not with the actual gun but smoothly feeding in the ammunition at high "G".
I continue to be amazed at people who refuse to understand WHY the 8 .303's were fitted, it's because most pilots couldn't actually hit anything in combat so to make up for the lack of accuracy they simply threw more bullets, they even developed the "Dowding Spread" to produce a shot gun pattern of bullets to try and increase hits.
From what I have read the feeding was the issue with all HMG's and Cannons in the early war years, G forces on the belts caused all types of issue's.
Wouldn't that many 30 cal slugs make a really bad day for anybody?
I wouldn't want to be on the receiving end of a 2 second burst
Many of the RAF pilots like Johnny Johnson wanted four Hispano's.
From what I gathered from Bungays "The Mos Dangerous Enemy" was that, it was perception not fact in the BoB era. RAF pilots were getting hit by canon and so wanted them. The 8 Mgs of a Spitfire or Hurricane sometimes seemed to have no effect. But they didnt see what happened later, some ditched some made forced landings and many landed but never took off again, they took a heavy toll on the crews too.
Robert Stanford Tuck was disagreeing on you there in 1940, though.
It's was simply where air forces were in 1940, basic gun sights, minimal gunnery training and tactics. I wish I could find a report I had that was compiled after wrecks from both sides were inspected during the BoB, it showed the most successful attacks were from directly behind the target at close range after examination of the bullet strikes.
Was a four .50 cal manned rear turret ever tried before the B-52? It would be a beast.
There was am overlap of effectiveness which confused things even between the 20mm and the .303 ammo. The .303 was not equipped with anywhere near it's optimum ammo During the BoB. They did not have enough of both AP and Incendiary ammo. Increasing either/both to about double what they were using in the BoB would make at least a noticeable impact.
Preaching to the Choir here Buffnut453
.All good points, RAF fighters in the BoB used a lot of standard Mk7 cup and core ball ammunition which would have been the standard load out for for .50 also in the BoB if it was used which isn't much good for setting planes on fire, the .50 AP rounds also tumbled after impact further reducing their effectiveness, as for the 20mm they had fusing issue's that weren't sorted until after the BoB, the Hispano's usually didn't go off and the MG FF's graze fuse detonated too early which tore impressive holes in the outer skin while leaving the internal structure secure.There was am overlap of effectiveness which confused things even between the 20mm and the .303 ammo. The .303 was not equipped with anywhere near it's optimum ammo During the BoB. They did not have enough of both AP and Incendiary ammo. Increasing either/both to about double what they were using in the BoB would make at least a noticeable impact.
The 20mm guns in Spitfires had problems until they got the C wing with the belt feed. There was also a problem with the fuses in the early ammo being much too sensitive and exploding on impact with the aircraft skin and not penetrating, solve in short term by mixing in solid (or hollow) inert training rounds which would penetrate quite a bit but not do anything else. I don't know when they got the fuse thing straightened out.
One does wonder what a Hurricane IIB firing 5 guns with AP and 5 guns with incendiary and 2 guns with tracer would have done to German bombers in mid 1941 compared to the 2 guns with AP and one or two guns (if lucky) with incendiary used in the BoB.
Preaching to the Choir here Buffnut453
British didn't like American .50 cal incendiary bullets in 1940/41 and didn't use them. Which pretty much left them with with AP, Ball and tracers. And as we both know, the 1940/41 British .50 cal ammo had about 300fps less velocity which meant it had a lot less punch than the later US rounds. It was better than the British, Italian, Japanese .5/12.7 but not even the stuff the Americans used at Midway (or before?).
This is when the British could even get the .50 cal guns to fire even in the nose of a Tomohawk in the summer of 1941.
The Browning M2 indeed did strike a good balance between punching weight and firing duration.
