Dear Mas, Recently I was checking through my stockpile of .357 Sig SD ammo. I keep my pistol loaded with Ranger T, and have a small reserve of both Ranger and Gold Dot. When looking at the ranger ammo, I noticed two different versions of the bullet. The Ranger T I have has been acquired through multiple sources, and most of it is loaded into magazines, so I have no way of knowing where the different types might have originated. The first type of bullet seems to be the classic Ranger T - a shallow hollow point cavity, and very obvious pointed ends on the jacketing of the "petals" , complete with long taper, inside the hollow point cavity. This design seems pretty consistent with the 9mm Ranger T ammunition I own, which also features these elongated, tapered petal ends. The second is a little more unusual - a much deeper hollow-point cavity (without pulling a round and examining it, it almost seems to extend nearly to the base of the bullet), and much more blunted ends to the petal jacketing inside the cavity. While there still seems to be a sharp point at the ends of the petal jacket, it is much shorter and significantly less tapered than the "shallow-cavity rounds". I remember reading once (possibly here) that early Ranger T in .357 SIG suffered from a design flaw (One that would be a concern more to LEOs than to civilians using it for SD), and was subsequently tweaked to correct the problem. Is it possible that I have a mix of that older ammo (or some other design revision of T-series), or do I have non-T series ammo mixed in with the Ranger T? Also, if the "deep-cavity" ammo is the standard, non T-series ammo, would you have any concerns in terms of performance for use as carry ammo compared to the T-Series? I get the feeling either one will be highly effective, but I do feel a little concern over the ammo inconsistency. Thanks, again, for your excellent advice and help.