Need answer for oxidizer

[displayfireworks1]

I am working on a future video and need help. Does anyone know the name of the oxidizer used in this exploding target compound? This one is 22 sensitive and different than Tannerite.
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http://www.targetsportsusa.com/images/Product/large/4137.jpg

[Grumps]

Dave, here's a formula that will work with .22's:

Potassium chlorate 60
Sulfur 10
Antimony trisulfide 10
Magnesium, 200 mesh 10
Aluminum, -325 mesh 10
Calcium carbonate +5

[displayfireworks1]

Thanks for the formula, I am looking for the ingredients this particular company uses. The container has two bags. The oxidizer looks like Ammonium Nitrate in prill form. My understanding is that a Ammonium Nitrate and Aluminum formula will only work if you use a high powdered rifle. I received a private message telling me Ammonium Nitrate and Aluminum can be made 22 sensitive in the right ratio. Also I note on the container it states the ingredients are flammable when mixed. I do not believe Tannerite is flammable when mixed.
The reason I am looking at this is because someone in the business was telling me these 22 sensitive targets are some form of flash powder. My experience is a tradition 70/30 flash mixture with a small amount of sulfur is 22 sensitive also.