Video looks like it wants to be push feed - need to make it come up behind the claw so it's controlled round feed like Larry says.
Some links you may want to look at
http://castboolits.gunloads.com/show...er-Conversions
http://castboolits.gunloads.com/show...62x39-or-45acp
http://castboolits.gunloads.com/show...and-45-ACP-Kit
http://castboolits.gunloads.com/show...-Kit-revisited
http://castboolits.gunloads.com/show...ACP-45-WM-kits