We sure can't say we are pros when it comes to shooting bobcat in Pa... This is going to be something new to many of us Pa hunters who have yet to kill a bobcat in Pa..
First off....I would think the 12 gauge shotgun would be probably the best in thick cover... Since bobcat do live near thick cover you probably could not go wrong if you used a shotgun.. Again keep in mind they will get in direct line with the loudest part of your speaker so probably would be good to set up a ways down wind and set up across from where the direct or loudest part of the speaker is or who ever is calling..
You can't go wrong with the 17 CF thats for sure... Now what do you think about the 22250 or 204 Ruger.. Might be just a bit to much power for even a bobcat...
One can't go wrong with the 222 and the 223.
However would the 22 Hornet be OK to use too?