Paul: Sherman Bell wrote a couple of articles on low-pressure ten loading a few years ago in DGJ that are useful if you'd like to roll your own. One cool thing I've found is that the Federal plastic hulls (wish there were some papers!) will hold a slight roll crimp very well - by this I mean using an old 10 gauge hand-cranked roll crimp tool, just turning the mouth in a bit, without a full roll, will securely hold a top card under recoil.
Short tens are also excellent for BP loads! The typically thicker barrels on a ten mitigate the vast amout of heat put out by BP so asbestos gloves are not a necessity like with 12s. The Fed cases usually hold up for three BP loads, though a few will 'hole' on the first firing. Short tens are great!
