Pyrodex & Triple Se7en are made & bottled in the same factory. A few posters have reported " sulfur-smelling" Pyrodex in their 777.... myself included.

My jug was approximently half-Pyrodex Select and half-777. I shot 30 shots with it that day. My groups were not consistent, but there was never any barrel pressures danger.

Every once in a while, the overhead powder feed line at the Hodgdon factory does not become completely empty when they switch powders for bottling. Hodgdon took my remaining 777 back to test it' s contents & shipped me a new jug of 777.