IMO, your dollar parameter is unrealistic for getting what you want, particularly a 16 with ejectors. Even if you find a used X it's likely to be in the category of "you get what you pay for". Possibly you can find a modern Savage "Fox namesake" 311 in 16 with ejectors... I think they came in 26". That's the only double gun that comes to mind right now. But then again it won't have the POW grip configuration. I think you are against a brick wall unless you find an obscure Euro gun, and then you're going to have trouble getting parts if you need them. It might be better to increase your budget to the $2-3k range and find a good American ejector 16. Silvers