I just picked up a 300 WSM.
Thinking to start with the TTSX bullets.
A all round moose and elk load.
What is your #1 go to powder for 300 WSM???
..............There are several powders that I have used which work well in my 300 WSM in bullet weights from the 165 grainers up to and including the 200 grainers. Using these following powders in my rifle, there are certain charge weights which are more accurate than others, but for overall accuracy these are my go to powders.
RL17........ gives the best velocities
N165........ offers some of the best accuracy
H-4350...... same as N165
With 150-155 grain bullets;
You`re just going to have to experiment to find out which powder or powders works best in your rifle.