I don't know about you, but I have no trouble with the 38's guns. Usually a quick burst on any of the main fighters in the MA (spit, 109, la, n1k) will rip its wing right off. The other day I was rtb because of ammo, I had no cannon left and only 24 50 cal left. A 110 was vulching the field I needed to land at, and I was able to get behind it and kill it with the remaining 24 rounds.