There are a couple things you can do increase 22LR accuracy
http://www.pacotools.com/tool_discriptions
check out the Rimchec' tool allows you to segregate and group your ammo by rim thickness .. thereby having a more consistent headspace which should give better accuracy
and the ACU’RZR tool which allows you to uniform your bullet diameter in two sizes 223 and 224 or the ACU~RZR 3 & 4 MAXI PRO which allows you to make all your bullets 222 or 223 or 224 or even 225 diameter whichever fits your bore best and gives the best accuracy.. the tool also gives you the option of forming the bullet as a wadcutter, or for hunting a deep dish hollowpoint , or the "scorpion" deep penetration with delayed expansion shape.
If you are totally anal and want complete control you can reload your own 2LR rimfire with this kit and some of the associated accessories
http://22lrreloader.com/design-details/
recommend
https://sharpshooter-22lr-reloader.mysh ... oducts/die
and
https://sharpshooter-22lr-reloader.mysh ... g-compound
the repriming compound can also be used to rebuild both boxer and more importantly berdan primers, as well as recharge rimfire ammo.... something to look at if you have some of the old pistol caliber rimfire pistol like 32's
They have several videos and for the survivalists how to reload 22LR with matchheads and whatever happens to be laying around ... not my thing, when I have the proper priming compound and powders to do the job right...
Yes, I have a set.. tedious .. but nice to know you could if you had to.. more for making/ recharging berdan primers for most excellent 7.5 x55 Swiss RUAG berdan primed brass
The PACO tools will tighten up your groups
it all hinges on if you are willing to do the work instead of complain.. 22LR is not famous for super quality control .. but even more.. I can't think or any other cartridge that has to make owners of so many different brands or types of weapons ( with the associated manufacturing differences in tolerances), of so many barrel lengths, (pistol up thru long barreled rifles) and so many different type of actions ( lever , bolt ,auto, break action, pump) and feeding arrangements with a chamber that may be used for 3 different lengths of shells.. "happy" ??
You got to ask yourself .. exactly what version of all the 22 LR's ammo in the world are the standard irons sights regulated for?
Another option is to just keep trying different brands and types of 22LR until you find the one that works best .. which is what a lot of Mosin Nagant rifle owners do ( but in 7.62 x54 ) made in about 20 countries and 100 different arsenals around the world using at least 10 different powders all with slightly different rims , bullet weights, case dimensions .. .303 Brit can be like that as well, and both can be ammo that was made anywhere over a 70 year period of time.
And any ammo that has been surplused out and sold off had a problem , small or large, that some country didn't want to bet their soldiers life on.