I just wack the floor. Cheap carpet glued to concrete.
Third wack and I get the satisfying rattle sound.
The three wacks must be pretty good as after about 3 bullet removals I have to straighten out the handle. Its soft though so not much of a problem.
Nut behind the bolt - HA!
The lil' green hammer is good on the primer punch also and a lot of other things too.
I love my little green hammer ........... when I can find it.