Mike - I would think you'd be better off staying with normal bullet in the 6.5x54 - the Premium's aren't needed for it's low velocities.

I have no data for it using Reloader #19. I only have Re#19 data for the .260Rem. and .260 CLC as noted. Also, I've never used a 140gr TSX.

The old Lyman books have 6.5x54 data, but they used mostly Hodgdon Ball and IMR stick powders. That data I can give you, however note that some powders have changed somewhat over the years. Let me know what 'normal' NA powders you have access to and I'll lookup some loads for you.

Oh - check reloading.com - bet there is data there for the 6.5x54.

Either of the IMR's in 4895's, 3031, 4320, 4064, along with Hodgdon H380, H335, BLC2 - those are pretty much what the old Lyman books have. Maybe the new Lyman book has some data, I'll check.