For smoothbore I recently tried RS just because I could get it readily and inexpensively. For dove shoots I go through a lot of powder - about 3500 grains in one shoot (so a can will last about 2 dove shoots). I got instant ignition, did not clean between shots all day (31 shots and 50 shots on two different shoots) and a lot less smoke than the Goex I was using. The birds didn't know the difference. It cleaned up easily with just 4 wet and soapy patches. I was satisfied enough that I am going to use it more often in the smoothbore. Never tried it in a rifle and wont work in my flintlock but for smoothbore I liked it.