KNOw3

Very good info! Thank you!

OK 

Boosting small shells with flash or whistle is one way to power up the burst. But It seems as if many people use BP as burst, and not H3 or KP. Even in small shells, and thus needs a booster to make the shells performe. Especially smaller shells like 2 inch.

But there is allready burst charges devemloped and tested, like KP and H3. Personally I use H3, but when my chlorate is used up, I'm never going to make it again. Chlorate and the whole load of problems most people know about by now...
I believe that KP can be used for all sized shells, with a booster for the smaller shell from 3" and below. And KP is close to "perchlorate BP".
I try to stay away from sulphur when it is not absolutely needed.

There is not really any burst developed for very small shells around 2". But I know that the "Chinese" shell builders use a flash like compostion. With slower burning metal fuel or mixed with another fuel.

I don't really know a lot about flash bags and similar because I have only used H3 until now.

I understand, Yugen-biki. I am not trying to be controversial here. But please understand the point of my asking...

a) Many in these forums are suggesting small amounts of flash (<2g) to augment burst charge in small aerials. I was wondering if this might be a nice substitute that eliminates some of the dangers of flash...
Several posts refer to perc-based flash that use small amounts of sulfur, which is known to sensitize it. Therefore, perc + S appears to be suitable without the presence of C?
c) Of course BP is powerful! I am only restating what has been stated times before - small shells may require the hulls/ricing method if BP is exclusively used as the burst charge.

Finally, NO I am not querying re: chlorate BP but PERchlorate BP.


Cheers,

1. You can't replace the KNO3 with KClO4 and still call it BP.
It is more like KP, used for burst.

2. I don't think it will improve the BP. The reaction is allready very fast with help from the sulphur.

There is really no need for a powder faster than BP, and there is not really any substitutes to be found for BP.

I can understand you if you never have successfully made good BP. You will try to find ways to imrove the BP, and a lot of peolpe before you have tried to substitute the KNO3. But that's a bad id?a. Chemical instabilities and stuff...
If you have good quallity BP you'll know it?s power, and you don't need to find a way to improve it.

The moderators here are not very fond of this subject I assume ("chlorate BP" that is), and I understand them.

Other ways to improve the BP, like ball milling, are found in this forum.