75 gr .223 ammo . . . increased problems feeding? Yes? No?

**ViniVidivici** · 11-01-20, 15:19

I've run plenty of 75 and 77 gr bullets out of multiple 5.56mm chambered ARs, never a problem.

**fedupflyer** · 11-02-20, 09:49

I have shoot plenty of the Hornday 75g Steel Match and Steel training ammo and zero problems.

When I get to shoot 3 gun, I use 75g Hornday as my rifle bullet for stuff over 100 yds.

**RWH24** · 11-02-20, 10:15

Would any ammo manufacturer even load factory ammo longer than What an AR mag can handle?

Shooting single shot, load one and shoot you can have your OAL into the rifling or just kissing it or not at all.

**jsbhike** · 11-02-20, 12:37

Originally Posted by RWH24

Would any ammo manufacturer even load factory ammo longer than What an AR mag can handle?

Leaning towards yes. Likely with 80Gr SMK and more so with the 90.

https://hsmammunition.com/match/

**ST911** · 11-02-20, 16:14

Originally Posted by RWH24

Would any ammo manufacturer even load factory ammo longer than What an AR mag can handle? Shooting single shot, load one and shoot you can have your OAL into the rifling or just kissing it or not at all.

Before everything got so AR-centric, there were more that did just that. Less widely available though, and more specialized loads. Sorry, can't remember a sku as an example.

**Disciple** · 11-02-20, 17:49

Originally Posted by ST911

Before everything got so AR-centric, there were more that did just that. Less widely available though, and more specialized loads. Sorry, can't remember a sku as an example.

Were any of these ever labeled 5.56mm NATO?