The statements are true here. Try a different ammunition in your particular pistol. Many time, hard primers will give the look of "light hits", however, it is usually the pressures inside the round when ignited, pushing the casing and primer back against the breech face, causing the primer face to flatten and appear to be a light hit condition, which, actually, it is not.
Keep us informed after you try a few different makes of ammo through the gun.
Eric R.