If you want the bottom lines, yes the .22rf will kill foxes at 25 to 40 yards with head shots. The little .22 bullet does not react the same as a CF bullet. The .22rf is a little bit like hitting an animal with a hammer, you get bruising and tissue damage and if you hit a vital organ you will kill the animal but a centerfire bullet due to it's speed delivers a shock wave internally due to a massive wound channel. This shock transfers through out the animals body and in to vital organs BUT never mind my waffle or the opposition of a dunce. Please refer to the Home office guidance to the Police, Chapter 13 clearly states that the .22rf is NOT a suitable for Fox control and is not a good reason to posses a firearm. It does however the .17rem & .22H as suitable. If your stuck on rim fires then you could look at the .22WMR which is good out to around 75-80 yards.
Edited by HUnter_zero, 23 August 2009 - 06:06 pm.