Null B powder for priming

[smylee grouch]

Blader check and some scorched fingers maybe.

[Mad Monk]

The 7F powder is made for fireworks use.

[Daryl]

This question might blow up in my face.... 
But what are thoughts on crushing something like Goex or Swiss 4f in a non conductive mortar and pestle?  Something like ceramic or stone?
Probably wouldn't take too much pressure to make a little bit at a time, and as long as you weren't trying to hammer down on a large shot at a time it should be FAIRLY safe no?
Say something like 20grs at a time gently crushed.
Even if it went up there wouldn't be any pressure and the poof would probably be little more than a bladder check.

yes - you could likely do that and get away with it, in a mortar and pestle. I find it easier to just buy 4F and a pound lasts about a year.

[alacran]

There was a fellow from Arkansas selling powder at the Western Nationals about 10 years ago. He sold 7f powder and labeled it as Gator powder. It worked well in our dry climate. However it tended to cake up when I used i in the Midwest. In really humid conditions I prefer to use 3f in the pan specially for hunting.