Titegroup starting and max loads .44 Rem Mag-
180 GR JHP - 10.3-11.5 grains
185 GR LRNFP - 5.3-6.6 grains
200 GR LRNFP - 5.0-6.6 grains
200 GR JHP - 9.7-10.8 grains
Personally, I would step up to a slower burning powder. IMR 4227 and W296 are two of the powders prefered by many .44 shooters I know.
You're in luck. Hodgdon used to show some detailed load data for TG on their website. I loaded .44mag back then and saved a copy. For the 185gr bullets I suggest you use data for 200gr bullets.
I saved .44 special data too. I used .44mag brass for the special loadings and never had trouble with squibs using TG. It's marketed as a position insensitive powder and seems to work well in large cases. I only shot 240gr SWC in .44spl