It makes you wonder!
My friend and I went to the range today. He is a big 30-06 fan and has 3 rifles chambered in it. He's been shooting Barnes 180 TSX bullets and they shoot great out of 2 of his rifles. He brought out his oldest rifle that he had just put a new scope on. He was using some older Sierra Game King handloads to get the scope close. After getting on paper at 25 yards he shot at 100 to get closer to center. He broke out the Barnes bullets and results went something like this. Shot 1 low,right, 2nd after scope adjustment high,left? Readjusted scope and shot 3 shots. About a 3" group! At this point he let the barrel cool down. After 20 mins or so another 3 shots produced another 3" group. He checked the mounts and rings and all was tight.
now he decided to shoot the Sierras and put all 3 into a cliverleaf with all touching. Shot another group with same tesult. He went back to the Barnes and group was 2 1/2"!
This makes you wonder how many guys load up their favorite bullet or shoot their favorite factory ammo and think they got a lemon of a rifle.