That depends on the barrel length, however, all combat happens inside 400yrds so the difference is marginal at best.
For everybody else, just aim for the legs
223 is more accurate than 7.62x39
*At longer distances, not inherently more accurate
Thanks, it feels nice too
Sorry for posting this 3 times, I can’t see the post on my profile page so I didn’t know it worked until I got replies
Thanks. Just need a dummy rifle grenade now
Accuracy at longer ranges is essentially just small caliber high velocity cope to make up for increased deflection that small grain loads suffer from. It’s better to have a bigger bullet because combat ranges aren’t far enough to make a difference anyways, this is why you see Grendel and .300blk trends, which are essentially just 7.62x39 with extra steps.