To answer Obsessed with Doubles question. We use old used Industrial cartridge cases. Fiocchi, Federal, Winchester and Remington all make them. They are used in a special gun and shoot 3 ounce solid slugs and are used to descale lime kilns and such like. I get mine from a local lime works and they use them by the thousand. I prefer the Remington ones but they have now switched to Winchester. I had a special die made to re-size the heads as they have a step in to stop them being inadvertently loaded into a sporting gun and fired with the slug with disasterous results. Load as normal and finish with a roll crimp.
If you want some fired Winchester cases and are willing to collect them from Derbyshire I will gladly let you have a load of them. Lagopus.....
