Great question but in all reality your already doing more then the bare minimum. Its a good idea to have a bill of sale and check for state resident for sure but (yes ive checked with my lawyer) you really just have to have no reason to believe there a prohibited possessor. I often sell guns to save up for something I want and its completely legal to make a profit so long as that wasn't your intention when buying the Firearm.When private sales of firearms in Indiana I am aware there are some different rules in regard to age, handgun or rifle and qualifications. In the past I have sold several handguns and a few rifles one at a time to Indiana residents only that I know and meet all the qualifications. I alway make out a bill-of-sale and require a drivers license and signature and appropriate initials. My BOS always includes the serial numbers and other info. Signatures in 'blue' ink.
Recently I have decided to sell one rifle and 4 or 5 handguns. Some of my friends are interested in one or two and my question is there a rule regarding how many firearms one can sell at a private transaction or is there a time span involved ?? I have been researching and can only find partial information to some extent. Thanks in advance for helping out.