I'm at a loss to understand how sizing it again will fix it. Are you counting on the expander button to pull the shoulder forward again? Sounds iffy to me.
If it doesn't work then de-cap it so you can get clean price for the brass.
"Always place your clothes and weapons where you can find them in the dark"
"Understand that the enemy is not the enemy in his own eyes ;this may offer you an opportunity to make him your friend. If not, you can kill him without hate, and quickly."