Ok I have tried several bullets of different weights and powder and so far H1000 with a 190 smk works well (needs fine tuning ). Runnin 79.0-79.2 gr H100 , FED215 MP seated at 3.440-3.490 . I also tried the 240 SMK amd it worked better than expected . Runnin 65.5 gr H4831SC , FED 215 MP seated at 3.500 . I am going to try the H4831SC with the 208 A-MAX , 200SMK and 220SMK . I finally have a primer pocket uniforming tool and flash hole deburer comming . The groups with the two already tested were just over an inch at 200 yds (trigger pull ) . I most deffinately need a new trigger ! The stock one blows ! Pull is inconsistant ! Any one else out there with loads for the 300WM feel free to comment .