I owned a left hand Pit Viper. It was my first custom made longbow I owned, although I bought it used. I had purchased from a friend who got me into trad shooting and bow building. He had ordered it from James. It was an amazing shooter and one of my all times favorites! I was new to trad shooting though and coming from a compound bow, thought I needed 60# to hunt whitetails with and this bow was 62@28". Later after I learned better form and quite being hunched over and short drawing, it was very obvious that I was overbowed, so I sold it. If it was 10# lighter it probably would have saved me tons of money and years of trading and selling bows looking for another bow that I shot as well.
There was a great article in one of the early TBM's about JD Berry bows. At one time a lot of the big shoots were all being won by JD Berry bows. Then it seemed like they kinda disappeared for a few years. Didn't hear of anyone getting one and didn't see any advertisements in TBM anymore.
I am glad to see James back in the lime light and building some great new bows.
I should call James sometime and see if he still has the old form and if he would make up a Pit Viper again.
So yes, I have experience with the Pit Viper and yes it is one heck of a nice shooting bow IMHO!