I find that .22 jacketed bullets shoot far more accurately than .22 cast bullets in my guns at cast bullet velocities.
With jacketed bullets at cast bullet velocities, group averages are ~ 1” for five 5 shot 100 yard groups, with a Savage Striker 22-250 or a Savage M12 with a HV 223 barrel.
With cast .22 bullets, the best group averages are ~ 1.5” , with many barrels, bullets and several powders.
I think that this shows that the accuracy difference isn’t caused by the shooter, the bench rest equipment, the powders or charges, the guns or the reloading equipment.