'RicKrager' - Nice looking 'stock-sleeve & butt pad'. That should soften the blow to the shoulder, a  bit.

Even in hot summer weather, I put on a cloth USMC-style shooting jacket. It has sewn in shoulder and elbow pads which help prevent bruising and pain.

Shooting high-power rifles from the bench is more punishing to the body than "position-shooting".

Some people are more susceptible to recoil pain than others. Although, 110grain .30-40 loads are rather mild for me.

(To tame recoil at the bench, I have a firm grip on the forearm, a 'cheek-weld' at the comb and a good lean into the rifle butt, as I shoot.
I have a firm foam stadium-cushion, that I lay on the shooting-bench and dig my right-elbow into, as I squeeze the trigger. This prevents the rear elbow from taking a beating on the hard bench top).

FWIW:
If your shots are stringing vertically, try loosening your trigger-guard screws and rear barrel-band. Wiggle your barreled/action a bit, making sure the barrel is centered in its channel and the action is flatly seated in the stock.

Firmly gripping around the stock and action with one hand, tighten the front guard-screw "Firmly", with the other hand.

Next, tighten the rear barrel-band. When viewing along the top of the barrel, you may see a thin sliver of light between the barrel radius and the inside radius of the band. This is good; the band is not 'binding' the barrel as it heats up.

Last, tighten the rear guard-screw so it is just snug.  If over tightened, the rear screw will lever or torque the barrel upward off the stock barrel channel and into the barrel-band.

Worth a try, your Krag wants to please!