only thing ive seen with youth rifles is they do seem to "kick" harder i personal think its from the shorter barrels. i would take a standard 270 and have the stock cut to fit you. i think youll find modifying a gun to fit will better suit than buying one to work
with fairly long arms I've never had to cut a stock. I would cry to cut a walnut stock but one needs a rifle to fit. Light rifle and short barrel can lead to increased recoil. I would never buy a youth size rifle in a stout caliber, rather a youth rifle in 243, 260 ect.
My son had a Rossi 243 youth that shot harder than my 270. And I have as Asian friend that is small in feature so he has all his guns cut to youth size stocks to fit. Some he has cut straight and the rest he does buy replacement stocks and has them cut and if sells later he can put the origanial stock back on.