Re15 in place of Varget?

[PinesAndProjectiles]

I put my 6GT barrel on my rifle today and am looking to run Re15 to form some brass and play until the barrel speeds up.

Has anyone run this combo?

Any advice on where to start?

Alliant's website has nothing listed for the 6GT.

I see Re15 is about 110% greater charge weights when comparing cartridges running same bullet weights.

Is it safe to assume that that with a Varget load of 33.5g that I could run 36.85 grains of Re15?

Or am I way off base?