How thick are the limbs? You got about twice the weight out of that width that I have ever gotten.
I'm with Asharrow. I hate wide handles, admittedly, but I would have had to go 2" longer, stiffened the handle, and added at least 3/8" width to get that weight out of a similar limb design.
Don't you love how elm (except for red elm) basically looks like nothing special, until you slap that dye on,a and suddenly, "Oooooooo, that's pretty!"