I'm crimping mid cannelure and the hotter I run it the better the groups but nothing real good even at 19.5 gr which is .5 from max. I never really did like the scope thing on a pistol and I think I will go back to the drawing board using the factory irons. I think I was better off that way. I'm going to try close to max loads with irons at 15 yards and move out from there.
By seating long, I mean OALs of 1.745" and 1.775" for the XTP and the BB, respectively. This allows for bullet speeds in the 1300s with safe pressure.
I don't know if you can do this with the Taurus.
The OAL will change the dynamics of the load altogether, so I may get the same results with the load you are using. I have not tried N110 in a 1.6" 240 grain load.
Good luck on your search for an accurate powder.