the factory ammo that has a good track record for being accurate IS the 223. Zillions of rds are pointed at gophers each season and alot of it is with mass produced factory ammo. You can certainly find something that will shoot sub MOA. Just the cost and time to test adds up real fast. And then the ongoing cost of shooting is much higher but if living conditions negate reloading... you gots to do whats ya gots to do.
Tikka rifles tend to shoot very well. As do many Savage rifles. WHICH ONE? Well, you will have to pays your moneys and takes your chances in both rifle AND factory ammo.
Why many of us build the rifles we shoot and handload for them.
It will actually cost less in the long run....
YMMV
Jerry
