I thought this latest episode was a lot of fun. As a Burn Notice fan I got a huge kick out of seeing them tackle one of Michael's "spy tips." Hell, you could probably devote an entire season to just stuff from that show (like all the various uses he gets out of a cell phone).
As for the bullet ricochet, I'm sure they could have lucked out and hit the right spot eventually, but as they showed it would have to be a REALLY lucky shot. And at that point, you might as well try something else.
And I have to admit I expected at least SOME kind of small boost from the shockwave. Nothing like what we see in the movies of course, but at least an extra couple inches. But looks like there just isn't enough air being pushed out to get the job done.