Are you looking for a 22LR, 22 Short, 22 MAG?
I have a Semi-Auto 22 Mag (Marlin 922M) and it is a tack drivin powerhouse of a 22. They stopped makin 22 Mag in the Semi-Auto, but a few can be found on sites like gunbroker.com (kinda like Ebay for Guns).
If your lookin for customization, the Ruger 10-22 has too many options to list or the newly offered Ruger SR-22 is pretty sweet to.
For plinking, can't beat the Ruger 10-22. For hunting, can't beat the Marlin Semi-Auto 22 Mag.
You also might want to check out the 17 HMRs also.
?-ERock-> ?