I do my bunny hunting with a 20ga sxs, and a coulpe of things that I've learned are Don't shoot too close in dry grass, and immediately step up wind after your first shot. Black powder shotgunning is as it gets for me.
Some general information: Dram= 1/16oz 7000gr/lb devided by 16oz/lb
devided by 16 = 27.something grains
To start working up a load, the volume of powder and the volume of shot should beabout equal
Plastic wads WILL melt in the barrel however hot soapy water and a tight patch will clean it righ up
The "Drams Equilivant" on the box gave the 19th century shooter a way to compare the speed of the new smokless stuff to their old stand by loads
Shot cups cut off of modern wads tend to tighten patterns
Higher velocity loads tend to open patterns
Old roll crimpers are still being found on ebay
http://www.circlefly.com has good prices on wads, are very knowledgeable and willing to help (I'm not positive of the url, if thats not correct do a search for Circlefly wads.
Equlivent Black Powder loads do not seam to have as much felt recoil
Black powder shells do not allow a gas operated shotgun to function for long
Doubles at the skeet range become an even greater challenge
I love the fire breathing dragon so I use 3" 20ga when I can get'em
While not quite as good as sex, is more readily available and the grin lasts longer
Butler Ford