I would say the only reason NOT to buy them would be the price, or if they don't shoot good in your rifle. They do have the reputation for being more finicky than "traditional" bullets, but you would have to try them for yourself to see for sure. In general you are going to get very good penetration compared to other rounds, but they seem to expand pretty reliably, though maybe not as dramatically as some. One advantage is that you don't end up eating lead which happens sometimes with a lead core bullet.