Shooter <<---- #1 far and away
Equipment condition
Load tuned to barrel harmonics
Projectile
Watched my daughter's BF shoot PPU Factory ammo through her Marlin XL-7 in 7mm-08. Five shots, he *might* have been 2 MOA. As he got up from the table, he muttered, "cheap gun." Sure was a cheap gun. I think I bought it for $249 from CDNN. Had a Japanese made 4X Simmons for a scope that I bought used for $35.
She sat down, put the next five from the same box in the X, all inside a nickel. I've seen her shoot that well many times, it wasn't luck.