I bought this powder thinking it was the go to powder for 150grainers, only to realize that the only loads for it i have found have been for 180s and 200s. Is it safe to use the load for a heavier bullet with a lighter bullet, of course reducing and working up?

thanks, that is an excellent resource

I've used the 150 grain Hornady interlocks with 69 grains of H4831SC and it worked pretty well for accuracy. It whacks ground squirrels like the fist of an angry god.

From what I have seen so far Win 760 and the new IMR 4007, oh and R-19 look like the powders to try for the 300wsm bullet range.
The H4831SC should work well for the heavier bullets.

yea i knew that h4007ssc would be ideal, but the local shop didnt carry it. thanks for the input fellas