Yes, this is why people have to have 4 different powder loads for one cartridge based on the ambient temperature because it is such a Temp Stable Powder.

I shoot a fairly hot load of Varget in my 6BR from -20c up +30c with the exact same powder loads and exact same results....try that with RL15 and see what happens. A hot load in the winter will cause primer piercing etc when the temps start to get up there come spring/summer.
Varget
is overrated....stay far away from it for sure......saves me from having to hunt it down when my supply starts getting low.