At 25 meters, I am getting 12" patterns from my Benelli M4 Entry using LE133 00. Out to 75 yards, I can manage 1 pellet on steel, per trigger pull, on 2/3 IPSC steel. At 100 yards, I average 1 pellet on steel every 2-3 trigger pulls.
Using slugs, at 50 yards day or night under NODS, I am 100% confident in a hit from LE127RS slug on this steel from any position. At 75 yards, I drop to around 80% confident or so standing unsupported. Past 75 yards, the low recoil slugs don't do the best, IMO, and I switch to Fiocchi Aero 1oz full power slugs, which from prone or seated will put them on the 2/3 IPSC steel nearly every trigger pull. Standing, I'm usually 3-4 out of 5.