Been bombing runways for a while now and have been relatively successful.
Some of my favorites:
A P-51 is about to land when - kaboom! Haxxor's bomb got him rolling to a stop. The same P-51 immediately spawns in and - kaboom! my bomb got him. We were in high B-17s.

*
Carpet bombed the length of the runway, nailing two Brewster's in the middle. By the time the bomb stream reached the end of the runway, one of the same Brewster guys spawned in time to get dropped for a second time.

Got an entire formation of B-24s mid runway from a 500 pound bomb dropped from a B-29.

edit: * the 51 driver got muted after that. must have been hot under the collar.