I have been loading Hornady 55 gr soft points for my Ar. I recently bought some Midsouth shooters 55 gr varmint nightmare HP's. When I load the Hornady bullets there is no mark in the bullet from the seating die, but when I load the varmint nightmares there is a shallow indent ring in the bullet caused by the seating die. I am thinking they have a thinner jacket. They shoot very well and very accurate. Is there a short fall with these bullets ?