That's surprising to me too- I've shot both, but never bothered to put them side-by-side to compare them. I figured as well that the 200 SST/SW was basically the XTP with a plastic tip. I'm kinda surprised that the SW is that much longer than the XTP. You'd expect that the BC for the SW would be a lot more than for the XTP, but if my memory serves me correct, I don't think they are that different from one another. I know the BC for the XTP is listed at .199, but I can't remember what the SW is....