I just ordered a couple of boxes of 180 grn Interbonds to try in my 300 RUM. Spent last summer trying to get her to digest 165 grn Interbonds without success. Must have went through two dozen powder and load combinations looking for something really tight in the 3500 fps range. Now that the 180's are out, figured I'd see what I can do in the 3200 maybe 3300 fps range. Any thought or recommendations on powders and favorite loads?