Hey Bucky,
Nice lookin group bud but I have to agree, it sounds like a VERY stout load you are using there.
I use 31.2gr Varget in mine and even though RL15 is slightly slower burning (not by much) I would be very careful when the weather starts to warm up. RL is more temp sensitive than Varget and I would hate for you to have to machine the case from the boltface if pressures hit catastrophic levels.