1) You can't kill anyone in the TA.
2) HOing bombers is the BEST angle of attack. You can shoot them, they can't shoot you, and it puts you in the best position to hit the pilot which is the fastest way to knock one out. Just be ready to dodge like mad if you miss.
Approaching a BUFF with a half-way competent gunner from dead astern will very quickly teach you just how appropriate that term is.
I DO believe the part about it taking a full clip to knock him down, tho, based on some of the complaints I've seen about the spud guns on the 262 'round here.