Nope it's a passage from his book The first and the last entitled "Chased home by Mustangs"
From Tumult in the clouds Lt. Col. James Goodson
Then I spotted him again ,in a shallower dive , but now three mustangs were behind him. They were firing, and maybe hitting but they weren't closing. I had the advantage from my vertical dive and was able to cut across and close slowly. I didn't get to within range until we were almost on the deck. I checked the fuel gauge and knew I should have turned for home ten minuets before.What was more the 190 was streaking eastwards I closed until I was about 300 to 250 yards - beyond my preferred range, especially when he was jerking and evading . I fired one burst and then another . Little puffs of smoke floated back from the 190. I gave another burst , but it was only for a second . I was out of ammunition! I broke away and headed for home with my three flight members . They too had shot their ammunition and were as low on gas as I.
From Gallands book
An account of an attack on a B17 straggler by himself and Troutloft near Magdeburg. While Galland attacked the B17 Troutloft then reported a mustang attack and stated his guns were jammed forcing him to break off combat. Galland then descibes the end of the combat.
I simply fled. Diving with open throttle, I tried to escape the pursuing Mustangs, which were firing wildly. Direction East towards Berlin. The tracer bullets came closer and closer.
As my FW190 threatened to disintegrate and as I had only a small choice of those possibilities which the rules of the game allow in such harassing situations , I did something which had already saved my life twice during the battle of Britain. I fired simply everything I had into the blue in front of me. It had the desired effect on my pursures, who suddenly saw the smoke which the shells had left behind coming towards them. They probably thought they had met the first fighter to fire backwards or that a second attacking German fighter was behind them. My trick succeeded for they did a right hand climbing turn and disappeared.