Adjust your seating stem down just a bit, (to the correct OAL) and run one round up into it. If the bullet seats deeper without buckling the case do the rest of them. If there is buckling just pull the bullets with a kinetic bullet puller, re-bell the cases and seat 'em to proper OAL.
Life is a little bit tragic but mostly magic... Learn to deal with the tragic and CHERISH THE MAGIC
A PACIFIST is someone who won't raise their hands to defend themselves...
A COWARD is someone who won't raise their hands to defend someone else.