They may be less than that of a 243. I've never shot a 243 though. When I look at recoil tables of the 30-30 and the 243, 25% less than the 30-30 is right at about where a 243 is.

A buddy of mine shot the 270 managed recoil rounds from my gun and compared it to his daughters 243 youth handirifle. He says the 270 kicked less with the managed rounds than his daughters 243. However the youth gun is so light that he though the comparison may have been skewed