A faster twist 223 on that particular action is negated somewhat by its mag constraints when used with higher B.C. bullets and doubly so with tipped secant ogive ones.

In short, I wouldnt fear a 1-8 Sako sporter in 222; it would make a hell of a versatile rifle. It could still be used as a varmint gun or for deer. It would also be better on windy days when the ranges are long, drifting less.
I havent had any issues with the tipped varmint bullets in even larger cases. Nosler, Hornady and Sierras with tips shot just fine, even 40's with a 1-7. No bullets flying apart, no groups over an inch. Some have been half that.