L.S.D
Ruger mark 3 or browning buckmarks are both great pistols and accurate for the money.A ruger single 6 can be had for bout 400 with the added bonus of a 22 mag cylinder.for even less money u can get a beretta neos or smith 22a.
all are accurate enough and will probably last a lifetime.the rugers and buckmark are heirlooms that can last generations.the most accurate? exceptionaly accurate individual pieces in all makes are possible,as well as some turds from time 2 time.i love my mark 2 for its accuracey, my single 6 for its durabilty and ability to digest anything,my smith( a discontinued 422) for its carryability,and the neos because its cheap and looks futuristic.i dont have a browning yet!but everyone i know that has one wouldnt part with it.
if you search used stuff,any smith revolver in 22 will probably be a keeper.unfortunately the newer 10 shot smith revolvers are expensive,but excellent weapons if u can afford it.some rimfires i dont care for are sig mosquitos,heritage revolvers,and that damb ugly walther target style.i wont go into detail as 2 why,its mostly personal reasons,im sure others like these handguns.the old"its me,not you" routine.sorry to rant,it just happens 2 be a favorite subject of mine.if im forced to pick just 1,my ruger mark 2,its very accurate,very durable,and emptying 10 rounds as fast as u can rocks!