Check out the price of
Wolf Match Target long rifle ammo... it is standard velocity "target" ammo that is usually VERY accurate in most rifles and it's cost shouldn't be more than about $3.50 to $4.00 a box wholesale.
If you don't need THAT accurate a round or you don't wanna spend that much per box, it depends on what your rifle(s) "like". Hopefully, you'll know what brand/type of ammo that is.
If you're gonna use it for plinking as well as hunting (rabbits, squirrels and varmints), buy hollow-points. If you're not going to hunt with it, buy solid points.
However, all rifles are VERY individualistic and what shoots like gangbusters in your rifle might not shoot worth a "hoot" in my rifle... and visa-versa.
I've test fired 29 different brands/types of .22 ammo in my CZ453 "varmint" (it has a factory-installed single set trigger and "heavy" barrel) which is a very accurate rifle... and it "likes" Wolf Match Target, Federal 711B, CCI Mini-Mag hollow-points, Fiocchi M320 Match ammo, Federal Classic High-Velocity HP's, CCI Select (1200 fps), Fiocchi Maxac and Super-X Hi-Velocity HP.
I didn't even try Eley Tenex which is traditionally VERY accurate ammo... it's just 'way too expensive for my kind of informal target shooting.
All of the above shot well under an inch in my CZ453 @ 50 yards... with Wolf Match Target being the most accurate and shooting 5-shot groups of
less than 3/10ths of an inch @ 50 yards off the benchrest.
Next "best" (aka "most accurate") was the Federal 711B with
many 5-shot groups
under a half inch @ 50 yards with the rifle set up on a heavy aluminum Lyman rifle rest with a sandbag on the rifle rest under the forearm and 3 sandbags under the toe of the stock... a very solid set-up. The 4-12x by 40mm scope with A/O was set on 12x and the parallax was adjusted "out" using the Adjustable Objective turret.
I didn't weigh the ammo... nor did I separate the ammo according to rim-thickness.
Those "accuracy tricks" comes next after I have my gunsmith glass-bed the receiver, pillar bed the action and re-float the heavy barrel !!! I'm also moving my 6-24x by 50mm A/O scope off my heavy barreled Sako varmint rifle in .222 and onto my CZ453 in .22 rimfire.
After all, you can't shoot better than you can see... ! Good luck...
Strength & Honor...
Ron T.