Savage,
Many moons ago I stumbled across a set of RCBS shot shell dies for the ACP. They were priced about 30 bucks below what I had ever seen them for so I snapped them up. You basicly end up with the same shell that CCI sells. Take 308, 708 brass saw it off, reform it, size it, prime it, stuff 6.3g of 231 in it. Insert a Rem 410 wad down tight on the powder and cut off the excess. Add around 110g of shot, top off with a plastic over shot cover made from paper protectors and crimp. The only problem I've had is if the gun isn't clean as in having lead in the throat the shell sometimes won't extract. What is cool about these is that they will feed from the clip! There was a test in a old NRA magazine where they actually took rabbits and grouse with them but were using 8 shot also. I'll see if I can find the article.
Ryan