Just looking at my last post about Day two and my firearms encounter. My friend got to encounter the cartridge limitations on airlines first hand and proceeded to take a selection of bullets from my ammunition case. Both types of cartridges had Barnes in them that had blue tips. MRX and TTSX in 150 and 130 grains respectively. I discovered that they do not shoot in the same hole that day at the range. It finally dawned on me that I was shooting different bullets. I did not know my friend had done a mix and match without any organization in the ammo box. Oops. (He had to do it at the last minute at the airport.) He brought all that were allowed within his weight restrictions. The 130's were accurate and exactly what I had sighted in with at home. The rifle was on. I just brought the 150's because of the suggestion about "heavy for caliber" being better. It was insurance, if the 130's did not perform. Thankfully, there was an accurate scale and we just weighed each cartridge and determined what was what and I was set. I'd use 130 TTSX and that was it.