The Woodleigh manual has suggested impact velocity listed. The text suggests you can go faster and achieve excellent results, but the impact range will give the most predictable performance. I have read stories that suggest 100 -200 more fps is still fine. But, I have also read about over expansion. Does anyone have a sense what velocity over the listed range is just too much for these bullets? Is there a reasonable margin over these listed ranges one can play with? Any direct experience?