The [Model] 5.0 connector typically offers a pull weight averaging 4.0 pounds (\pm 0.5 lbs), which is characterized by a rolling, lighter, or less defined wall (pre-break resistance).
The 8# provides a more defined, stout (heavy) wall and results in a higher pull weight, often around 6.0 pounds, when paired with an aftermarket trigger shoe (like the Vex shoe) and an enhanced firing pin assembly/spring.
Trigger Feel: The combination of these parts often results in a significant reduction or complete elimination of perceived grinding or "squishy" trigger travel, leading to a cleaner, crisper break.