How dull are we talking? If dull enough, you could very well get a pass through but not of the diameter your bh is, because of such a blunt force your making the initial hole, and then stretching the rest of the blade through, thus leaving a smaller hole, Plus all of the internal matter your "pushing" through rather than cutting
Im not saying butter knife dullness but i mean even after shooting a deer with one you can use it again.