My wife and I are involved with the Society for Creative Anachronism (SCA) group for a number of years, and specifically with our local group for about two years.  Our local group is a good bunch of people.  Several times a year we get together at one house on a holiday weekend and camp out.  I had been meaning to come out to them for several weeks now, but never had the opportunity and had decided this was going to be the time.
Originally I had been pretty confident about their reactions, but thanks to a bad situation a week ago that confidence was shot.  But it had to be done.  I'm on hormones, things are changing and some of these people see me once a month so they'll notice changes.
The reactions were great.  They ranged from "Oh really?  That's cool." to "Here's my new cell phone number.  If there's anything I can do to help you call me anytime, day or night." to "You realize this means I'm now going to flirt with you too."  I also answered the requisite billion and a half questions throughout the weekend.  And even with coming out and answering the questions I was more relaxed there than I had been anywhere else except my own house in about 25 years.
By the end of the weekend the only people I didn't tell were the kids, but that's because I figure the parents can handle that the best.
Val, still crying happy tears.