Larue upper with 75 grain hornady bullets
I just purchased a Larue upper and I am worried about getting ammo. Everyone says I need the Black Hills mk262 and I know that stuff probably shoots the best but I have a chance to get some Black Hills 75 grain w/the Hornday OTM in it for cheap. I was wondering if anyone has shot a similar set up and how good does that ammo do in it. What about Hornady 75 grain tap or GMM in 69 grain. I know this aint the ammo thread but I figured I would get a better response in this forum since alot of you guys shoot the Larue uppers. The upper I ordered is an 18'' barrel with Leupold 3.5-10 Mark 4. I have read some guys shooting .5 or less with the 77 grain but not the 75 or 69 grain. Any advice from experiance would help.