Just got back from an African safari where I took 9 species ( gemsbok, nyala, zebra, waterbuck, springbok, blesbuck, impala, black and blue wildebeest) with Barnes 160 gr TSX in my 7mm Rem mag. All but 2 were 1 shot kills and dropped them in their tracks. Ranges were from 80 to 350 yards. We recovered only one slug (impala) and it was a perfect 4 petal mushroom. It retained 100 % weight. Actually, it gained 0.3 gr of tissue. All other shots were through and through with a 7mm entry and about a 1 inch exit hole. Heart and lungs were pulverized. Obviously, I am a staunch Barnes fan and use them exclusively in all my rifles. The results speak for themselves. When I cleaned my rifle there was neglible copper fouling. I'm going back next year for buffalo and plains game. My loads will be Barnes 350 gr TSX in my 375 for m'bogo and 235 gr TSX for others in my 7 mm.