I chrono-ed some of the Winchester 125 grain Silver Tip on three separate occasions back in 2006, from three different boxes. All were shot in my Sig P220 w/4" barrel. On August 12 a 5 shot string averaged 1201 fps. On September 2 two shots averaged 1162 fps, and on October 24 two shots averaged 1176.

The hotter temperatures in August probably influenced the outcomes. Also, the ES on those five shots in August was 43, which I though was a little high. As previously stated, those three results were from different boxes, which I believe spanned a significant time frame of manufacture, because some of the boxes had the cardboard bottom, and others were styrofoam.