Story: Avengers #53
Background: The X-Men (O5 minus Angel) were brainwashed by a machine of Magneto to attack and kill the Avengers (Hank, Janet, Black Panther, Hawkeye). Beast took on the Black Panther, while Iceman fought Hawkeye, Cyclops fought Giant-Man, and Jean fought Janet.
[Scan Tip: Click to enlarge the images and they are easier to read. You can scroll through them all that was as well. --- Shadow]
Young Hank just got schooled by T'challa!
This would actually be a pretty cool fight in the current comics. I believe Hank put a beating on Sabertooth when Hank was blood lusted. They are both quite agile, fast, and very intelligent.