From the professional, scientific ballistics tests that I've seen, I haven't seen any information about the Golden Saber fragmenting when shot into normal barriers. Cinder block and bowling pins are hardly good measures of ballistic performance, so what the bullets do when shot into these things shouldn't shape your opinion. In all of the FBI's practical ballistics tests (including penetration of building materials and automotive glass) the Golden Saber performed quite well, showing more expansion than the Gold Dot while maintaing adequate penetration. I know it's fun to go shoot up bowling pins, milk cartons, etc., but that's not a scientific ballistics study and that really shouldn't shape your opinion on bullet selection.