I use lightning loaders made butler creek. I believe they are no longer made but CVA makes a simular speed loader. They are a straight through design and will take 100 gr of powder and a patched ball or conicle. The tubes are capped at each end. The powder end can be opened and powder poured down the barrel and with the tube still in place the tube can be opened at the ball end and projectile can be pushed all the way through the tube and into the barrel. A very easy and efficient operation.

I believe cabellas sells the CVA loaders.