powder quesiton

Can anybody explain why some fast burn rate powders work for pistol and shotgun, like Clays or WST, while others seem to be shotgun specific, like Ramshot Competition or H. Titewad, even though the burn rate should work for pistol?? 
Thanks

Yeah, and why can't Bullseye be used as a shotgun powder? There are plenty of Alliant shotgun powders that have been used for light target handgun loads, i.e. Red Dot, Green Dot, American Select, Clay Dot, e3 and Unique come to mind.

Ive heard it's mostly because they don't test for other uses, they concentrate on the many load combinations the powder was designed for.

That mostly.  There were some efforts to try Bullseye for shotgun but only for very light loads 3/4 ounces.  I know international clays can work very well in SOME pistol applications but not enough to call it a pistol powder.

It seems the dual use powders are the bulkier ones.  Look at how much "puffier" Red dot is vs the same charge of Bullseye.

I use Titewad for 32S&W Long. I'm testing Titewad in 45 with 185 JHP. So far it's really good.

Ghillieman,
You have a PM from me.

BE Mike wrote:Yeah, and why can't Bullseye be used as a shotgun powder? [snip]

Probably, because from the beginning, Hercules wanted to keep that stuff from being ALL used up by those high-round-count shotgun hogs. 

And for that I am grateful.

But since I haven't seen Bullseye powder for almost two years now, what good has that done????