I've had personal struggles deciding between .223 & .308. I have found the pro's and con's in both calibers. I've worked back & forth, and say what you like, there is utility in .223. General purpose, defense, ammo ( weight, capacity & availability ), hunting, etc. On top of that, all in my group can easily handle the round with relative comfort & confidence. I'm certainly not above "bigger is better" kinda thought along with the general arousal brought by a bigger round. Lol. I do want to enhance my own marksmanship & I feel the pull of the .308 appeals to that end. I know there are newer more fancy & expensive options for pure ballistic bliss. But the 308 is a proven long standing round that still can fill all the other rolls demanded by SHTF situations. So I'm building an autoloading 308. To enhance my defence capabilities, further my marksmanship skills, and fulfill the desire..