Would appreciate the translation of below description. Trying to make sense of all other .223 information on the forum but it is just not as easy as comparing Portuguese surplus .308(grab and shoot with confidence) to .308 from India (check each round).
Or American Eagle .223 55gr, Winchester White Box GaulMart special seems to say it all on the box.
Understand that no one cartridge can do it all but don't want to shoot through paper what I should save to shoot through whatever comes along.

223 LAKE CITY SS109 GREEN TIP M855 - 62 GRAIN STEEL PENETRATOR 5.56mm
FRONT LINE AMMO. NO "X" NUMBER OR PD NUMBER

Will be shooting through 1/7 twist 16" barrel.

TIA for all advice on this and other AR.com forums where I have asked questions.
Best site I have ever run across.

m855 is a good round
winchester and federal american eagle  are both great rounds.

M855 is good, but for use against unarmored persons (like looters) you will want M193 (55grains) or some heavier stuff.

since you have a 1/7 twist you might want to try some heavier rounds like the Mk262.

Ammo-Oracle

Quoted: Ammo-Oracle

Is this link broken? Won't work for me.

Link worked for me and thanks.
Other links on other posts did not. Hmmmmmm

.223 Lake City is great ammo