Hi Tim, thanks for bringing up one of my favorite topics. I love bottle hunting just as much as detecting. The whole thing started years ago when I found a bottle from my wife's grandfathers dairy company, which he founded in the 1930s. Now, I have many bottles from their dairy, as well as an old milkbox, and I collect antique beer, soda milk, ink and medicine bottles from Rhode Island and Eastern Conn. I have found quite a few dumps while out detecting in the woods over the years, and as a matter of fact, my buddy and I are going to check one out in CT on Saturday. We also have an early 1800s property that we have permission to dig the outhouse pits on. We're going to hit that in another couple of weeks. The owner has two known outhouse locations on the property, so we're hoping for some really good stuff.
Here's a pic of some of the bottles in my collection. These are some old milk bottles, and some colored label sodas: