I own a Colt AR-15 -model 6920 with a 1 -7 twist ! For home defense I am considering using Corbon's .223 Rem 77gr..MPR-- the only information I have on this round is the following-


Caliber: 223 Rem
Bullet Wt.: 77gr MPR™
Velocity: 2800fps
Energy: 1341ftlbs
Test Barrel Length: 16.0 Inches
20 rounds per box

I have practiced many times with this rifle at our local range but 1 week ago our local police could not catch an armed person fleeing from our town. This is in no way against our local police but at the same time brings my color code of caution up a notch!
Anyone have any info or heard things about this ammo?
Thank-you for your time and have a good Thanksgiven!
Semper Fi Till The Day I Die!