Many people enjoy using small pistols and revolvers, sometimes called "mouseguns." While the .22 is not the smallest caliber rifle, it is the most popular, and with good reason. Here are some links to interesting and valuable information about the world's most popular rifle.

The .22 Long Rifle

Lethality/Penetration of 22lr at 300 yards (shooting a turkey)
http://www.jesseshunting.com/articles/guns/category16/66.html
Specialty 22 Rounds
WikiPedia Article on the 22 Long Rifle Round
Ruger 10/22 Sniper Rifle (Israeli)
SV-99 Sniper Rifle
Sound Suppressed .22 Rifles
.22 Long Rifle Sniping in Iraq
Hunting with a .22
.22 Long Rifle, the Most Popular Cartridge in the World
Trusty Ol' Rimfire .22
Buying That First .22 Rifle, Hawks
.22's for Fun And Survival
The Chipmunk .22 Rifle
The .22 Rifle As A "Survival" Tool
22 Rifle for Sniping
.22 Long Rifle Ammo by Chuck Hawks
The .22 Short, .22 Long, and .22 Long Rifle
.22 Long Rifle Terminal Performance Data
.22 Long Rifle Match Ammo History
Australian Reviews of Some .22 Bolt Action Rifles
Rimfires in the Field, Robinson
Recommended Rimfire Rifles, Hawks
22LR Sniping Rifle
Poseidon Rifle 22LR Super Sniper by Volquartsen
Suppressed Urban Sniper Rifle, Small Caliber, .22LR
Green Hornet 22lr Sniper Rifle
Manual for Savage Stevens 980-DL-987 .22 Rifle

.22 Magnum Rifle -- A Step Up from the Common .22lr

The Sleeper (.22 Magnum)
Ruger's 10/22 Goes Magnum
Chuck Hawks Writes About the .22WMR
More From Chuck Hawks on the .22 Magnum
A Potent Little Magnum, Alex Wyschnja
The Coyote Rifle
Getting the Most from Your 22 Magnum
Three .22 WMR Loads From Remington
22 Magnum Discussion

Put A Scope On It!

Understanding Scope Terminology
OutdoorGuides Scope FAQ
Tasco's 22 Rifle Scope Site
Chuck Hawks Reviews Bushnell .22 Rifle Scopes
Scoping Your .22, Jim Carmichel
How to Sight In Your Rifle Scope
Another Good Page On How to Sight in Your Scope

.22 Pistol for Self Defense

Firing Line Discussion of the .22 Pistol as Best Civilian Self-Defense Gun
The often over-looked, under-appreciated, inexpensive .22 lr. rimfires
The NAA Mini Revolver for Self-Defense
Woman Uses Ruger .22 in Successful Self-Defense