Congratulations on your kill. I also dropped my first deer with a 357 mag this year using my GP 100 with a 6 inch barrel. I was using the Barnes factory load using their VOR TX 140 gr bullet. The shot was at 28 yards hitting her high in the shoulder breaking her back and dropping her in her tracks. I was very suprised to see her drop in her tracks.. I want to try a double lung shoot now to see how that loads really kills.