What's the difference between Black Hills 5.56x45mm NATO Ammo 77 Grain Open Tip Match and Black Hills MK262 MOD 1-C?

[Whitlock]

I'm curious if anyone knows the difference between the commercially available Black Hills 5.56x45mm NATO Ammo 77 Grain Open Tip Match and Black Hills MK262 MOD 1-C?
I read that Black Hills changed the bullet on the 77gr OTM's from the Sierra Matchking to a new Hornady bullet. Has anyone tested these two for accuracy, velocity, ES and SD?

 

[Bigjake83]

I'm curious if anyone knows the difference between the commercially available Black Hills 5.56x45mm NATO Ammo 77 Grain Open Tip Match and Black Hills MK262 MOD 1-C?
I read that Black Hills changed the bullet on the 77gr OTM's from the Sierra Matchking to a new Hornady bullet. Has anyone tested these two for accuracy, velocity, ES and SD?

My Black Hills 77grn SMK Ammo is faster than my MK 262 ammo.

And shoots single digits SD's out of my Geissele 18" SPR Cut Barrels.

I'll look out for any New looking projectiles when I order my next BLack Hills 77gr Nato order.

 

[Gasgun]

I have a couple thousand rounds of BH 77 OTM that I purchased recently.
Haven’t shot any yet, so I can’t comment on velocity or accuracy, but it is loaded with the Hornady bullets.
This is indicated on the label.

The MOD 1-C is still loaded with the Sierra bullet.