Reading this thread has started to make me wonder... do pre-82 Lincolns really contain any Copper?

Just kidding... SDcoinguy, which dates are you pinging that sound quite different? As was pointed out, the 82-96 series is a very different weight/shape. Admittedly, these are pretty flimsy looking/feeling, but still 98%.
Also, in (mild) defense of our current 1997 to present "token-like" cents, the zinc plancets we use are from the same batch as the U.S. mint (so I have heard... I may stand corrected). And I think our copper-plated steel cents make for a bit nicer finish than the zinc ones. It's hard to tell by sight alone that they are not copper.
One more light-hearted jab: I tried "pinging" the statue of Liberty when I visited NYC, but it just went "thud".