Factory loaded match ammo

[Koshinn]

I'm getting a Noveske Recon upper next week and I'm going to do some accuracy testing. What factory ammo is best for accuracy at 500m out of a ss 1:7 twist 16" barrel?

I have:
50 rds BH .223 77gr SMK
80 rds FGMM .223 69gr SMK
80 rds Hornady TAP FPD .223 75gr
40 rds Fiocchi .223 77gr SMK
40 rds Norma .223 77gr SMK

Should I try other ammo? Are the .223 77gr SMKs all going to be about the same?

[Onyx Z]

Some loads may agree with your rifle, some may not. Then again your rifle may like them all. There's really no way to know since they're most likely all loaded differently.

Ex.) During my load development, I loaded 77gr SMK that shot anywhere from 2" to .5".

[c3006]

Mine loves the BH 77gr Match HP Moly