What I've seen more consistently, and more recently is 4.8. Still not too shabby for a boy that big.
No doubt....4.8 in general is a fast human being. Like JR and WE!!! stated, 4.4 gets tossed around WAY too much.
All I can say to anyone is go run a timed 40 to see exactly how fast a certain time is and then you get more of a appreciation for these guys and their times. I'm kinda in the same boat as WE!!, I was never able to clock a 4.4 (and I was only 200-205) and I was usually one of the faster guys on the field of play, whatever the sport was. I find that a lot of the recruiting site guys who toss the term around so loosely have probably never ran one, especially looking at their pictures.
A 4.4 is just THAT damn fast. Which is a testament to how fast Bo really was. LP is not running a 4.4 Forty.