I don't think you can get the speed that you want out of Titegroup. I believe that the max loading for Titegroup is in the 1250fps range. The sporting clays load will actually chono in around 1325fps, give or take a little. I know of a load listed for Hodgdon's Universal that clocks in around 1310fps according to the book.
I have shot a few of those Nitro Sporting loads and don't like the recoil very well. I only use them on the sporting clays course for a few long shots that I may encounter from time to time. Other than that, I try to stay away from them.
These sporting clays loads kick like a dang mule and a flame shoots out of the action of my 1100 when I shoot them. I have been saving them for if I ever shoot another annie. There are alot better loads out there. If you want something fast I suggest Win. Super Field. It is rather light recoiling and you can get the speed you are looking for.
A shooting buddy of mine uses those nitro sportings' for line loads and 1 1/2oz of 6's for back-ups. I'll say the same thing here as I tell him; "If you keep shooting those those shells you will just be donating to the rest of us"! My back-up loads don't kick as much as those shells do.