after I read a post that using .20 Crow Magnum pellets with at least 14fpe me will increase the kill zone size 50% over a .177 dome due to it's large hollow point.
For the test I resprung and tuned my .20 oring sealed R9 to shoot the .20 Crow Mags at 17.5fpe, then actually hunted squirrels with it for a week. The result was the poorest hit to kill ratio I had ever had at 50%, whereas my normal hit to retrieve ratio using .177 cal CP lights is around 90%. The CMs gave a really satisfying smack on all squirrels hit with one squirrel literally getting knocked off a limb by the hit, but when I got to where it fell it was gone! I had similar strong sounding hits with simliar results. This proved to me beyond question that a poor hit from a 17.5fpe mv CM (the pellet wasn't especially accurate past 20 yards) wasn't as good as an on the mark hit from a 14fpe mv CP light. After that test I sold both my .20 and .22 barrels (a .22 R1 barrel that was chopped and choked) and have been using .177 since.
