I just used a Ritchie? rest for the first time today. I have serial number 005). Does not track as well as the Pappas one piece with the rifles I tried, but the Pappas would be very hard to duplicate. It will work far better than a bag for those disciplines I shoot that require a two piece rest. Coupled with my Fulghum front it does the job. I locked he rear adjustments because the Fulghum is so smooth and easy to use. Perhaps an adjustable rear is overkill but I find I like it. bob finger