There were problems with TiteGroup in 12-gauge trap shotshell loads too. The small drops barely covered the base wad and double charges were very easy to miss as the crimp wouldn't give it away by being convex as with most other powders. Because of that, I've always preferred slower burning powders over the faster ones like TG in all shells, handgun included, because they require heavier powder charges. But it's inexpensive to buy and use and that appeals to a lot of shooters.

Ed