Well lets see guys, I did not exactly measure penetration, but I do remember roughly how far they went, and in what order they penetrated the farthest. The big 250g sgk penetrated the farthest, probly going around 10". The 165g scirocco was next going about 8". The 150g btip and 140g ab went about 7", and the 140g sgk went about 6". Those are rough estimate numbers. They did not retain all that much weight, those numbers are as follows. The 250g retained 102.5g for 41%. The 165g scirocco retained 100.7g for 61%. The 150g btip retained 63.2g for 42%. The 140g AB retained 75.5g for 54%, and the 140g sgk retained 59.4g for 42%. I guess the sciroco all in all did hold up more weight, but the bullet was flat as a pancake. The 140g AB looks bad in teh picture, but the base of the bullet was not level so in the pic, its crooked, however it only peeled back to the bonded part that it should have. In my opinoni, the AB did the best. The 150g btip was also a surprise to me. The sierras lost there core, and the scirocco was flat as a pancake, even though it did hold up more % weight then any others. All in all, it was a pretty tough test for those bullets. At least it gives one an idea of what your bullets to expect if they hit bone, which is where I like to aim to anchor game on the spot. Thats why I use newspaper, I hear its kinda hard media, and since I like to shoulder shoot animals, I figure it gives me a rough indication of what to expect.