I had started a thread earlier and don't think I provided enough information. I have an AR with a 14.5" barrel with a flash hider permanently welded on so it is not a SBR. It has a lightweight barrel profile. It has a twist rate of 1:7. The intended purpose of this rifle is home/property defense in a rural setting. While I would expect ranges to be short for self defense inside a home, I would like it to be capable out to about 150 yds (which I realize is still fairly short range) against humans and coyotes. I am not too worried about ranges longer than 150 yards because I dont have good enough vision without magnification to shoot further, and I plan to just put a red dot with no magnification on it. Ammo choice is not as important as practice, but I figure I might as well maximize my ammo choice since it is as easy to order good ammo as bad ammo. Should I just stick with M193 ball (have a lot of that on hand already)? Should I pick a bonded JSP? Should I use a bullet weight heavier than 55g? Velocity is important for 223/556, and I am already using a barrel that is 14.5", so not sure a slower heavier bullet is a good idea.