The .243 is bny far the lightest recoiling of the three you listed. The .260 Rem. would be next, then the .280, which is pretty comparable to the .30/'06. However, the .243 also requires the best bullet placement to be effective on larger deer-sized game than either of the other two. Of course, bigger calibers are no substitute for good shooting, no matter what gun one chooses.

Keep yore powder dry!!