You know, I say the Tikka 300 WSM
is nothing great but it still shot about .6" with the first load I tried through it (I did not even pull the rifle out till today), and there is still a lot more playing to do. 180 grain NBT with 63.5 grains H4350. Like I said, I am seated way out since I converted the tikka to a long action. I saw no pressure signs, so I think I will try to 64.5 but will stop there since this is above listed value. BTW I was using Norma brass and WLRM primers. Thanks to everyone for the load info.