1) Since he has not yet been charged, is it legal for him to purchase a gun deer license and participate in the firearm season in WI (at least prior to any conviction)?
------
Innocent until proven guilty by a court of law.

2) Will this affect his right to hunt in other states, either this year or in following years, pre/post-conviction?
---------------
I'm pretty sure that only holds true to WI law unless he is charged with a felony...Ask the lawyers here.


3) Is he still allowed to target shoot with his back-up bow?
-----
When I got in trouble I was not allowed to even have a firearm in my house. However I was still allowed to keep my bow...and hunt with it luckily that year. He should be allowed to still shoot it but then again its WI law. You Yankee's are usually ass backwards than us though.


Once again good luck. I think you and everyone else who has read this thread now knows who to ask for help when its needed. No point in puttin' your business out here for all to degrade and yell at you because they are holier than thou. I bet not one of em goes 1 MPH over the speed limit. It would be against the law and there is no way these "perfect" people would do something like that. Go with emails, I know I'd help if I could.
I'd say follow the advice of the lawyer here on the board and hope for the best. Absolutely make sure he gets a lawyer though. It definitely won't hurt, it CAN only help.