I've read (not tested though) that with the 250gr SST, 3" high at 100 puts you 3" low at 200, or near abouts, if you are using 150 gr loads. MV of about 2100 fps with 150 grain loads. The chart is for a 100 gr load I think. Most people say they get around 1800 fps or so with 100 gr loads.