Sharpsnitro, the for end of your Holland simply snaps on and off. I know it feels like you must use quite bit of force to get it off but that is how my Holland is too. Pull it off grasping just behind the for end tip.
Akmike, the correct case is between the 32 short and 32 Colt long.
The Colt longs chamber just fine in my gun - I managed to scrounge up a few shells. Next will be a cast to see if I can simply use the standard longs.