Lena told me she shoots whatever is given to her.
I shoot 115s with 4.5gr of Sport Pistol which is about 140pf. I use either plated or FMJs. I do NOT use painted bullets
Basically the gun needs to have the entire gas system cleaned regularly to be reliable. What does that mean? Every 6-800rds is what I do. I’ll wipe down the BCG every 3-400 and oil. I’ll take the extractor off the bolt and clean behind there every 3-400 also. Other than mid Atlantic, which I’ll consider an anomaly, my MPXs don't malfunction.