The better medium game round in a pinch: .223 or 7.62x39mm

[Ignition Override]

Does the OP assume we are to know whether a .223 round is shot through a 16, 18 or 20" barrel (if distance is a real factor)?

Some guns in 7.62x39 have barrels longer than 16". Is the RPK 20" and a derivative 23"?

 

[Robert]

6 pages seems like enough for this round of 5.56x45 v 7.62x39. But don't worry, it'll be back.