Glaser started it all, but today we also have Magsafe and Extreme Shock. They all are considered "exotic" frangible rounds, and claim to deliver incredible "stopping-power" , while reducing dangerous over-penetration. Truth is, they are not very accurate, are too expensive to practice with, and in all but the most limited circumstances, don't in actuality, deliver the penetration to reach what matters. I helped test and develop Magsafe, with the late Joe Zambone. In the end, I had to see them as maybe useful to apartment dwellers, or Air Marshals but not for street carry. Note: Even Air Marshals use traditional ammunition; Speer Gold Dots. Glaser has a very "impressive" video on their website, with the Safety Slug making naked ballistic gel flip & flop every which way. This video means nothing in the real world. I truly like most everything else Cor Bon does, but not this frangible "Safety Slug." http://www.youtube.com/watch?v=JRap6lI9QBc A bullet that expands, while still penetrating deeply enough to reach vital organs, is what makes the day. Although there are many good designs now days in all service calibers (.38/9mm/.40/.45), Gold Dot remains a great choice. I also think highly of Winchester's Ranger T series, and carry it, from time to time. Federal has many good loads, as does Remington. It's hard to find one that doesn't work these days. Gold Dots remain at the top of the list, however. Anyway, in conclusion; frangible rounds rounds have more problems, than solutions, and are not worthy of their makers wild, self-serving claims... Here is a link to a female perp, that was shot with a .44 caliber Glaser Safety Slug. The bullet broke her jaw in several places, and knocked-out almost all her teeth on the right side of the face. However, most of the tiny birdshot pellets barely penetrated the tongue. She continued shooting back. Ultimately, it was a conventional bullet, that ended the fight. (Slightly graphic!) http://i88.photobucket.com/albums/k178/ulver_2006/0527102350a.jpg Once you choose you gun & caliber, the thing that is next most important is a good, modern hollow-point. And practice... Avoid wild claims, and novelty ammunition... Wanna kill these ads? We can help!