You may want to check that load again. I just looked at my Hornady manual and it lists 36.9 H110 as max for a much lighter 240 grain bullet. Then just to double check, the Hodgdon website shows 36.0 H110 as max for the lighter 260 grainer. The 454 is a fine round and Hodgdon even used a 9.375" Freedom Arms revolver to test with and they are about as good (and strong) a revolver as money can buy. If you feel you need more velocity, you may want to look at a 460 Smith. YMMV