Easton ACC 3-60; at 29" w/ a 100 gr. broadhead will come in at 415 gr. If you shoot 68#'s you'll be spot on at 6.1 gpp.

Easton Axis 340; Will weigh nearly the same, if not exactly the same.

Beman Black Max 340's will weigh more than both of those, but I'm not exactly sure of how much.

Broadheads, there are many to choose from, but 2 of my fav's are the Magnus Stinger and the Montec G5.