MIKE GEORGE says: On the basis that tens of thousands of rabbit shooters can’t be wrong, the .22 short subsonic hollow point seems to be the one.
The .22 short is one of the oldest rimfire rounds still in production, and was originally developed for small ‘pocket pistols’ back in the black powder days.
A modern .22 short, powered by nitro-cellulose, is typically loaded with a 29 grain lubricated lead bullet, and most develop around 1,050 feet per second at the muzzle. That provides about 70 foot-pounds of energy at the muzzle, which is quite enough for the job providing the range is not too great.
Being subsonic, the round is relatively quiet, even without a sound moderator, while the hollow point ensures that the bullet releases all its energy within the animal.
Got a question? Contact: firstname.lastname@example.org or Sporting Gun, PO Box 157, Stamford, Lincolnshire PE9 9FU