Well I tried my best.
4 hits: first one wasn't caught on the camera, one was a glancing blow, third took the top off and the 4th was a direct hit but wasn't caught on camera and really just mashed up the skin.
Misses... A lot. Forgot to count but more than a hundred throws most probably
To be fair I'm out of practice (I'm always out of practice) and it is a pretty small pumpkin.
In fact it's a red kuri pumpkin/squash which I just found a picture online of cut in half. Yeah I don't think I'm going to be able to smash one. They are super dense. If I can find a "normal" pumpkin that's not too huge and is pretty cheap I might have another go.
https://www.google.fi/search?q=red+kuri+pumpkin&source=lnms&tbm=isch&sa=X&ved=0a...I might upload some of my attempts on a separate thread just so I can get some feedback on my technique but I can put up the hits here.