For years I have shot these bullets. They had a flat base. I just noticed that my newest bulk shipment are boat tailed. My questions are how do they shoot compared to the flat base? Did they shoot as accurately with the same powder charge as compared to the old flat bases? And was there any change in POI and velocity? I really don't want to have to go through the whole process of brand new load development for all my guns but I'm afraid I will have to. Any experiences on the matter would be appreciated.