Ok here is my question I am reloading for my 308 win. I have worked up loads using 3 different bullets (165gr Nosler Partition, 165gr Sierra BTHP, 165gr Sierra SPBT). Selecting the powder that gave me the best group. Last week when I went to the range I decided to shoot a 6 shot group (2 of each bullet design) at 100 yards. the entire group was well under an inch probably close to 1/2 in. Is this uncommon occurance? I was always under the impersion that diferent bullet design would impact at diferent points.