I am not tiny at 6.1 and 230. I have bad shoulders from years of abuse as a hockey player. For me its all fit, some of the worst guns I have shot are those with chaberings most wouldn't considered nasty. Of course not fighting or being aware/scared of recoil goes a long way. Recoil pads are helpful no doubt, like sheridan i suggest pachmayr's. Just make sure it doesn't change your LOP (length of pull) to the point where fit is comprimised.

Of course technique is a big factor especially off a bench or solid rest, recoil should be absorbed or "rolling with the recoil". Simple terms don't fight the push, it will recoil no matter how big or tough you are the guns gonna come back once ignition happens. No point in fighting it or being scared of it. In a perfect world it just goes bang, you don't think about it happens it just happens and you move on. One reason why hunters say never felt a thing when I was shooting at that big buck or bull, focused on the shot not the results of firing it! Move that to practice and you'll be laughing.

Never a bad idea to fire a gun the first time from a standing position, allows your body to roll more with the recoil.

Best of luck and enjoy your new rifle