My father flew both the F4F-3 and the F4F-4 in combat with some success. He flew the -3 at Coral Sea and the -4 at Midway and in the Solomons Campaign. He always said that he was never quite happy with the weight gain for no power increase in the -4, not to mention the reduced firing time, and therefore had a fonder place in his heart for the -3. His next line was usually something along the lines of, " . . . of course, we could carry around a lot more –4s than –3s due to the folding wings." Bottom line, though, strictly on performance, he preferred the F4F-3.
The Thach quote comes from a de-brief interview with Jimmy Thach conducted at BuAer on 28 August 1942:
"Q. Have the following items of material given satisfactory service? What suggestions are offered for improvement?
Armament:"
"I would prefer to have the .50 caliber gun to any other weapon I know of; I have, of course, never fought with a cannon, but I still feel that for a fighter four .50 caliber guns are enough. The pilot who will miss with four .50 caliber guns won't be able to hit with eight. Increased firepower is not a substitute for marksmanship."
His answer goes on to touch on the subjects of radio communications, generally, and then the F4F's oxygen system, armor, emergency kit, self-sealing fuel tanks, and electrical systems.
Later there is this exchange:
"Q. Are present gun combinations effective? What combination would you prefer to use?"
"A. Our present gun combination is very effective. Naturally, it's better if you can have your guns in the fuselage, directly along the sight. As far as the number of guns is concerned, I would like to have six .50 caliber guns, provided the performance of my airplane was superior to that of the enemy. If it's inferior, I would say that four .50 caliber guns was optimum. If taking out two .50 caliber guns, or having two .50 caliber and two .30 caliber will make it easier to get on the tail of an enemy fighter, I will accept that. I know you can hit better with guns close to the sight and directly parallel to it. It's just like you handle a shotgun shooting ducks."
And
"Q. What is the minimum ammunition you need per gun?"
"A. In a fighter I would like to have 500 rounds per gun, but would be satisfied with 400."
"Q. What sort of firing do you have in combat, short bursts or what?"
"A. The experienced fighter pilot will fire only when he knows he's on and hitting. In fighting the Zeros sometimes we – well, I might say most of the time, we get only what we call snap–shots or pot–shots at them when they're climbing vertically away from us, and those shots are as far away as 400 yards. They can be effective that far away, but the lead must be exact and it's difficult to hit an airplane at that range. We have knocked them down at 400, but we like to get in closer of course, but the performance of our airplanes won't let us."
Q. How about tracer ammunition in fixed guns?"
A. We use it. It is excellent to determine any error in deflection. We don't particularly trust it in range, although if the tracers appear to be going ahead of the target you know they are probably going in. If they appear to going in the target in range you know that they're going astern."
And he addresses the crux of the F4F-3 versus F4F-4 ammunition problem in:
"Q. If you had a given amount of ammunition would you prefer to have a less number of guns and more rounds per gun or more guns?"
"A. I feel that four .50 caliber guns is optimum considering this performance problem we have. I believe that two are not enough. I would rather have four guns and 400 rounds per ammunition than six guns and only 250 rounds."
And in the last question of the debrief:
"Q. Would you rather have six guns if you have no sacrifice of performance?"
"A. We would rather have six guns, but there is no use carrying around six or eight guns if you can't bring those guns to bear on the enemy."
Regards,
Rich