I've never tried .453" bullets in a 625, but assume they would probably work fine, though .452" bullets are generally considered best diameter for .45 ACP and Auto Rim, semi-auto and revolver. A hard bullet may not shoot as well as a soft one, but it would be worth trying as there are always exceptions.

If you're experimentally inclined, order a hundred of each diameter and try several loads. I found recoil to be an objectionable factor with a bullet like you describe if heavier loads are used. Good luck-