Congrats on picking a .22 rifle
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Bench rest & shooting from a bench - what's the difference I'm not sure :S
"Benchrest" includes everthing up to shooting free recoil, massively heavy rifles in very precise (and expensive
) rests. These folks are chasing
very small groups.
Shooting from a bench could just mean sitting or even standing at a bench and shooting offhand (with a rifle designed to shoot offhand - not really doable with a dedicated bench gun). I plink cans "from a bench" like this often.
There's a lot of room to stretch either term.
There are a lot of .22 variants out there for a good reason. Every platform you could imagine is available. You just have narrow it down to what is legal for you and what works best for your intended use and budget
uhoh
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Tuj has given some really good advice already.
ETA: I forgot about the pistol. The Browning Buckmark and the Ruger MK pistols are far and away the most popular .22 pistols I know of. They are both affordable, work well, and are accurate. They are easy to work on and have a lot of aftermarket parts available for them. Your 4" barrel length will limit factory model choices, but an aftermarket barrel or a cut/recrown performed here should import OK I'd hope. Factory models with threaded muzzles are usually at least less than 4.5".
There are, of course, Olympic model target pistols as well...