I would fire one broadhead into that target to make sure they are not flying the same as the field tips. If they are then you would be dissapointed after buying a target only to realize you dont need it.

Are you shooting mechanical or fixed broadheads? Most mechanicals fly the same as field tips.

If you need a broadhead target after figuring out the above I would check out Bass Pro Shops website and have a look, many of the targets will say broadhead compatible.