Since Lovex doesn't list it (at least in my data), any data you are offered will most likely be without pressure and velocity data: in other words, something someone tried and didn't have issues with that they know of. If you are going to do that, you might be better served to deduce your own starting loads using the 6,5x55 SE data as a reference. Compare capacities of the Creedmoor to the Swede, and adjust minimum charge as required. Make up a dozen test rounds and try it. If it works, you can keep progressing through load development as normal. Start with the 140 grain and then figure that if the starting charge was safe for the 140 might be a starting point with the 123 grain. This may sound off the cuff, but it's better than blindly accepting someone else's extrapolations of the data.
On the other hand, you could contact Lovex and ask.~Muir