I have 4 boxes of 190 ABLR's. While reloading, I noticed one box has higher listed BC's than all the others. Is this normal?? I've never really paid much attention to little stuff like that. They are the same product numbers, and all other info on the boxes are identical. Are these actually a higher BC, or just a typo on packaging?? If the BC is actually higher on that box, will they perform the same?