Well, when I intentionally switched my answers to the more libertarian answer with all the nonsense questions just to test it out (Like the ones on astrology, luck, and ones asking if something is immoral in my opinion, which is different from saying it should not be allowed) and I got around where you got. The questions are still also pretty bad. Not a single question on guns even. Its the only test I've ever taken that I didn't score strongly libertarian and I've taken several.
As for felons, I agree with you there, as I believe you can lose rights as punishment for a crime, but only as punishment for a crime. Same reason jail and prison are legal. However, I don't support guns being taken away, or liberty being taken away, 'cause big brother says so.
As for your opinion on arms, I do understand your opinion, however, it is not a libertarian view and it belongs on the social scale, as opposed to the economy.