Semi-auto rifles are not allowed for any hunting in PA. Semi-auto shotguns can be used for small game and waterfowl, but that's it (may be legal for furbearers, not sure). 3 shot capacity maximum in the shotguns, too.
I have no idea why. Very outdated and unnecessary laws in my opinion.
Some other laws that should be changed:
Minimum hunting age is 12 (too old)
Any centerfire can be used for deer hunting (22 hornet?!!, 50 BMG?!)
No hunting on Sundays except for crows, foxes (in the season), and yotes. There's really no reason for this.
The only thing to hunt in the summer are wood chucks and yotes (and their fur is very thin then). I understand there are many juvenile animals in the summer, so this law does make some sense.
Lights can not be attached to firearms.
I'm sure there are some others but these are just some off the top of my head. Sorry for the off-topic rant but these laws just make no sense to me.