Thread: 300 Win Mag powder question - which is the best one for temperature stability?

of far more importance/relevance is which powder can you get your hands on...and in enough quantity that your expensively developed load doesnt have to be rejigged in 6 mths as youve run out of that powder type and cant get more. in my experience it isnt a huge issue unless your #A pushing envelope running hot loads #B stretching the barrel enough that a 50fps difference means a miss.