The wedge was a swine to remove on mine. Assuming you have greased it now for ease of removal, I use Remington Wonder Lube on mine, you my find that removing it again my be problematic. I use a brass key (won't damage the steel) hold it against the wedge and give it a firm tap. I rest the pistol barrel on a wooden block covered with a cloth. You can also use a flattened .308 cartridge case that also works well.
Always keep a rubber hammer in your shooting box, as those wedges have a habit of moving out.
Are you using B/P or a sub?