TexasCHLforum.com

Well, first of all, it is clear that you are OK from a federal misdemeanor domestic violence standpoint. A sibling is not one of the "defined parties". BATFE FAQ here: http://www.atf.gov/firearms/faq/misdeme ... lence.html" onclick="window.open(this.href);return false;

If you were 15 when it occurred and you are over 21 now, it has been more than 5 years so even if it is considered a misdemeanor conviction it does not disqualify you from a CHL. So you did not "throw away a couple hundred bucks on the course and application".

Regarding: "If the charges were for all intents and purposes thrown out, did I do more harm than good listing them on the application?"

You qualified that with "to the extent of your knowledge". Thus, since you are unclear, it is clearly safer to disclose it, provide the disposition, and get cleared for the license. Better safe than sorry, especially since the incident does not disqualify you.