Hey Ben,
There are quite a few communities that I know of in that area.
In Warrenton there is The Game Store. If you join their facebook page you can then join their bolt action group. I believe they are trying to plan an escalation or historical campaign to start in a few weeks. They did recently switch owners so they are still trying to get organized. Great store with a lot of playing space.
In Ashburn there is Huzzah Gaming. I have only been there once but it was quite impressive. Lots of stock and a wider variety of games. Everyone I know that plays any kind of tabletop mentions them.
A little further out there is Eagle and Empire in Arlington. It is a small store but they are almost exclusively Bolt Action and Black Powder. Nice playing space and any kind of terrain you can think of.
I also know there are a few places in Fredericksburg. I don’t know any exact names but I have been told there is a decent tabletop community in that area.
