Greetings. Newbie here, so bear with me. I am a pistol and revolver lover; have eight various. However, the politicians in Washington, DC have done such a lousy and self-serving job over the past few years that I am genuinely concerned that a SHTF scenario is a distinct possibility down the road. Accordingly, I bought a Bushmaster XM15 E2S .223 a while back. Having read a number of your articles and comments, my question is, should I upgrade to a .308? I have done a lot of looking and reading and come to the decision that if I buy, it would be a DPMS Panther .308 24" SS barrel with A3 upper and JP trigger. While the idea of getting into LR competitions intrigues me, my priority is to have a rifle with which to defend my family. Would appreciate any and all comments relating to my choise (DPMS) and whether it makes sense to "upgrade" to a .308 caliber. Thanks for taking the time to read all this.