6.5 Creedmoor brass

[VarmLR]

Yes, I've experienced similar with N140 Laurie.  I've so far been very impressed with the RS powders in temperature extremes used with Creedmoor SRP but admit that I haven't tried them with 308 Palma.  It may be a different story with a larger powder column but all I can say is that RS seems a very reliable performer in all temperatures with CM SRP...I have only tried it so far with KVBM and CCI primers.  I think that Starline may be worth a try as the large flash-hole/small primer combination might also address some of the MV issues using small flash hole brass, albeit I'm wondering if it'll delver the same consistent low ES/SD.  Time will tell!