Okay, not really (that's not really to the screaming, I did actually take those two classes, I also build and fly remote controlled aircraft, and yes, I'm working on a plane-mounted nerf). I understand the basics of "Streamline=light, Sucker=heavy" and it's harder to budge a heavy object at a given velocity than it is a light one at the same velocity. So small gusts of wind, and in general impacting the big block of unmoving air outside the nicely guiding barrel would send a light round a little off course. But the tip of the sucker dart is concave, it should technically be slower (think a mini rubber parachute on the tip of the dart).
At the moment I like using the nerf-stock-sized darts. I'd rather not mod my clips and such to take stefans, and until I actually mod a stefan-specific gun I'd like to avoid making them. I've heard a lot of threads where people have used everything from lead fishing weights through to hot glue inside the Streamline tips. I'm sure the former may cause a little contention with headshots, and I'd rather not test my guns with them; If I can hold it to my temple point blank and fire the gun without drawing blood, I consider it "safe" to game with.
I understand most people use stefans, but I'm sure there are a few people out there who - at some point - modded some stock nerf streamlines for better performance. I did look back through a lot of threads, but if any of them mentioned information of note, it was generally just a passing comment rather than an actual comparison. So to those who have experimented; What did you do, how did you do it, and was there a decent result?