Can anyone out there help me with my question? I looked at the Remington ammo catalog for the 357 SIG 125 gr JHP. There are two, the regular Remington box and then the Remington UMC box. The UMC is considerably less expensive, but the published ballistics for the two are absolutely identical. The two rounds also look the same. I called the national radio show "Gun Talk" and was told by the host that I shouldn't be asking what the difference was in these two ammo offerings, as I was "crossing a line" in doing so. Then I called the Remington factory and was treated like I was trying to steal company secrets. I only asked for help in picking one over the other for my personal use. Are they identical? Is the brass different? Is the powder different. Does the more expensive box have flash suppressive additives or other additives I should know about? I am not a re-loader, I just want the best of these two for self defense concealed carry in my Sig P229, without wasting my money if, indeed, they are the same in all aspects. Thanks for any knowledgeable input you can give me.