Goex certainly is corrosive though, and 777 loads need to be reduced by 15% volume.
Black powder is considered an explosive, whereas the sub propellants are only flammable and need to be compressed in a barrel to produce an explosive effect.
Pyrodex P generally produces more velocity than BP (maybe excepting Swiss), and 777 is probably even more potent, but if it's compressed very much it loses some velocity.
What type of gun are you shooting?
To set the record straight:
Federal law for many years has required an explosives license for dealers in explosives. The new "Safe Explosives Act," passed as part of the Homeland Security Act of 2002 (H.R. 5005), adds user permit requirements for buyers of explosives.
However, existing federal explosives laws have long made exceptions for black and smokeless powders, and the new law did not amend those exceptions:
1. Smokeless powder is considered an "ammunition component" rather than an explosive. Therefore, smokeless powder is not subject to existing explosives laws or to the new requirements.
2. Black powder is not considered an explosive, when sold in quantities less than 50 pounds and used for sporting, recreational, or cultural purposes in antique, replica, or muzzleloading firearms. Under those long-standing conditions, black powder is also not subject to existing explosives laws or to the new requirements.
During consideration of this bill, Senator Orrin Hatch (R-UT), senior Republican on the Senate Judiciary Committee-and now incoming chairman-was very concerned that it could have an adverse effect on legitimate gunpowder users. Sen. Hatch's staff worked closely with NRA to ensure that no language in the bill could be turned against handloaders or black powder shooters. As a result, the existing exemptions were left unchanged.
The bottom line is that this legislation has no effect on people who buy smokeless powder for cartridge or shot shell reloading, or on black powder shooters who use normal amounts of powder for competition, hunting, reenactments, or other legitimate purposes. Once again, Internet rumors to the contrary are false and gun owners are best advised to turn to reliable information sources such as
www.nraila.org to get the facts.