I've been reloading .233 competition ammo for decades but for some reason my last batch was slightly long on head space. Most run but a few are difficult to get chambered and when fired seem slow to eject. I re-lubed some rounds and bumped the shoulder getting them back in spec. I loaded a mag and ran the loads through the gun (no firing) with no issue. Is there any downside to bumping the shoulder on loaded rounds?