Twaang

777 pellets in 50s are roughly 5% weaker than Pyrodex pellets in 50s in chrono tests conducted.

In volume, 100 grains of 777 loose FF is roughly 15% more potent than 100 grains of Pyrodex FF loose.

777 pellets in 50s are designed to fall in line with Pyrodex pellets for safety reasons & to prevent confusing the rifle owner.

Always read the rifle owners manuals for loading instructions BEFORE you load the weapon. If a manual is MIA, contact the manufacturer... downloads are available online.... usually free!