azaminkor
Conqueror

You didn't fail the charge, you reached melee distance with the target. The charge rules say the charge fails if you don't reach melee range....

I'm not 100% sure on this, but I believe that first melee attack has to be used on your charge target. Additional attacks if available can be used on...

Ok, my apologies I misread here and I'll correct myself above as well. What you CAN do is declare a charge on a model, move to that model, then...

You would have to charge your charge target and get in to melee range with him before you gatecrash, you could then gatecrash to within melee range...