My father in law gave me some bullets to load for his 30-30 not a big deal I do it all the time for him, but this time it is a 180gr fmjbt. I was planing on starting out about 20 to 25gr of IMR3031 because the max I can find in my books is 36gr for a 170gr bullet. Also it will be for a bolt gun so now worries there. Just wondering what your guys thoughts are on this.