'Green_as_my_powder', on 03 Jul 2009 - 9:32 PM, said:
I am more ignorant than most, but I try to make up for my ignorance (gradually, of course) by doing tests. I too was concerned about the sensitivitiy of flash since I have almost no experience. From reading, it seemed that whistle mix was the most sensitive of the flash powders I use (more sensitive than general purpose H3 or other aluminum based) so I did a series of tests trying to get it to ignite. I posted the details of these tests awhile back. The final test was hitting a small paper canister full of whistle mix with a high speed bullet (several times). The bullet was copper jacketed, and the canister was mounted on wook--no spark. None of the tests resulted in ignition. For my own sake, I think the danger is mostly from spark and less so from mechanical impact. Certainly not conclusive, but I'm more comfortable working with flash after doing these tests.
70/30 kclo4/al can be set off with a .22 rifle....and whistle isnt flash, but that has been said and ur post is old...lol