First thing I personally would do is boil out that barrel and get that bore butter out of the barrel. I know Thompson Center pushes the product to protect their rifles. But they also sell it. I used it. I also learned that it is not the best thing to use. Take the barrel outside and pour boiling water through it until you're sure every trace of it is out of the bore. Even take a brush and scrub the bore a little with solvent after you boil it. Then apply a quality gun oil to the bore to protect it. This idea of seasoning a barrel might have been good back when metal was not what it is today, but with the new modern steel the barrels are made out of... bore butter is not needed.

Before you shoot after the removal... run an alcohol patch through the barrel to remove the oil out of the bore. Then a couple dry patches. Then go shoot.