I have got a real brain buster here. Here is the scoop. I have a browning 270 that i have in the past loaded with 150g Barnes X bullets. They worked great, i tuned my BOSS, zeroed them in and killed a moose and a caribou with great results. I was so happy with my newly discovered "super load" that i went to buy more. i couldn't find the older style Barnes "X" bullets, but i did find the "new and improved" barnes TSX. same grain, same flat base, same overall length, same powder, same primer, same everything, you get the drift. the only difference is that the TSX has 3 cantalures on it and the old X bullet was smooth.
anyway, i get to the range and cannot get the new ones to group. i am looking through the spotting scope and it looks like i am getting some really close shots with some flyers. after i go down range to check it out i find that the bullets are keyholing. everyone of them. i think that maybe the old browning is ready for some barrel work and head back to the bench. i shoot 3 of the old X bullets and they are right on with great groups and no keyholing????? any suggestions. should i call Barnes and gripe. those things were not cheap and it was quite a shocker to have the bullet that replaced the X bullet not work???