I use the hodgdon or viht sites regularly as well. Valuable resources.
Or you can go onto the bullet manufacturers site and look up the loads on the specific bullets you want to use.
They don't even list the 6.5 creed for use with RL15. Not saying you can't, but they don't list it. Looking on the burn chart it is a faster burn, and the ones you want to look at are in the 4350, 4831, RL17, RL16 range. I'm planning on using H4350 when I start loading for mine.