From a bench-rested position, many ordinary 22LR rifles are able to shoot consistently through the same hole at 50m, using mainstream ammo such as CCI, Federal, and Eley. A dedicated Olympic-style 50m rifle will obviously have no trouble doing the same. The challenge lies in shooting in the standing, kneeling, and prone unsupported positions without telescopic sights.
I would recommend trying out the cheaper 'practice' ammo from Eley and Federal, before moving on to the pricier products from Eley and Lapua.