UPDATE, 11/1/09: I had my Glock 26 (3.5" barrel) out last weekend trying out a variation on an old load; 4.6 grains loaded under a 115gr hollowpoint at 1.5". The rangemaster stopped me, because there was a lot of sparks coming out of the barrel. Although I knew it was just the powder, I checked the barrel and the shells for bulges and flattened primers anyway. As I suspected, it was just the powder, possibly with the flash enhanced by the short barrel.
Oh, and I'm at about 10,000 rounds of both 9mm and .45ACP, and still on the first 8 pound jug.
UPDATE, 6/2/2012: Having run out my small supply of .38 Special factory ammo, I.started to reload 38s. I have noticed that my hands and forearms aren't getting peppered with bits of carbon or unburnt powder when shooting the TiteGroup reloads, like I was getting with the factory ammo. I like that. The garbage that was coming out from between the cylinder and forcing cone was HOT. 4" service revolver or 2" snubby, it doesn't seem to matter.
Unfortunately, when you load TiteGroup under a cast lead bullet, you get a lot of foul-smelling grey smoke. I don't like that so much, and it's probably not very good for your health. I bought some Clays powder for use with lead bullets, and I'm not getting as much smoke.