777 has a reputation for going bad and causing accuracy problems and in particular with pellets. I ran into this with 777 pellets that were a couple of years old. They were in the original boxes, kept inside my house, in a climate controlled environment with no exposure to excessive heat, cold, or humidity.
I wasn't getting the same consistent accuracy with the old pellets so I bought some new ones. Problem solved.
Loose 777 powder stored in the original container might not have the same issues but I don't know. I switched to loose BH209 and haven't any issues with "old" powder.
FWIW, I've never read a reasonable explanation why old 777 causes accuracy problems. It could be absorbing moisture, the solvents evaporating, or a chemical breakdown over time. I dunno.
Last edited by fish head; 12/10/14.
