Thanks rickyp... As a matter of fact I am already using Ballistics Products as a source for some things. I am in the process of trying to put together what I need to develop a new load; in a couple of months I should have some meaningful info to share.
Now, a follow-up:
I spoke to the folks at Magtech, and others, and did a little research as well and I found some interesting stuff (well, interesting to me, anyway)
There are two types of full-length brass shells for shotguns; extruded and machined. The extruded ones, which is what the Magtechs are, are made from brass stock that is pressed and formed into shape using dies (more or less). These have a thin wall and the bottom of the interior floor is below the top of the flash hole of the primer pocket. These factors allow for a seriously large powder capacity - very useful for the higher volume requirements of some blackpowder loads. I found no available base-wad equivalence capabilities for these and they require less common oversize (11 ga.) wads and cards, and they use large pistol primers. They cost about 52 cents each new from MidwayUSA. The machined ones, as offered by Rocky Mountain Cartridge, are made from brass stock that is turned in a lathe to size and shape. They have a thicker wall, like a plastic shell... a thick floor, like a plastic shell with a built-in base-wad and, like a plastic shell, they use 209 primers. They cost about $4.60 each new from Rocky Mountain Cartridge.
So, one "tastes great" and the other is "less filling"... Which one do I prefer?... Actually I like Olympia beer better than Miller but here in Florida it is nearly impossible to get Olympia, so, often I end up drinking Yuengling... go figure.
I just ordered 20 of the machined ones from Rocky Mountain for evaluation and load development. More info to come... stay tuned.
