Winner-Winner-Chicken Dinner...
Was going to type the same thing, slough..
You need to push your shoulder back until the case fits YOUR rifle...Bill.
You did not setback your shoulder enough. 1/8 extra is not enough for your press. Screw it down farther until a resized case chambers easily in you boltgun.
Don't be modifiying anything until you have taken up all the slack in your press. You should consider getting a case gauge, but your rifle chamber makes a better gauge for precise ammo for your rifle.
Your situation is very common and easily fixed. The fix may not make sense, but try it. I know it works.
Was going to type the same thing, slough..
You need to push your shoulder back until the case fits YOUR rifle...Bill.