I picked up a Ruger SP101 in .327 mag. Very neat handgun. The power of the little cartridge is very impressive. Only thing I have found, The cases for the .327 mag are thicker that .32 H&R mag cases. IF you shoot H&R mag rounds
that are loaded near MAX
.......Sometimes the cases can split in the .327 mag chambers
. If you think about it, they have more room to expand in a .327 mag chanber. (the 327 mag chambers are bored to account for the thicker cases). These same warm H&R loads fire just fine in my bird's head Ruger .32 H&R mag single six. (with no pressure signs) But it looks like I may need to reduce them a little to fire in the .327 mag even though the SP101 should be a stronger gun. It is nice to be able to fire .32 S&W, .32 S&W long, .32 H&R mag, and .327 FED mag all in the same gun. A friend of mine that has been loading the .327 for a while now, told me that at the pressures the FED mag operates.....it is necessary to use small rifle primers rather than small pistol primers. (40,000) I believe is the upper limit. I have been loading the .32 S&W, long, and H&R mag for several years. I guess I am in the same boat with the rest of the world looking for .327 Mag brass now......Other than buying factory loaded ammo, I haven't been able to find any........(anybody know of a sourse ??)......Don in SC.