Wanted to relate my recent experience loading up some barnes bullets. This is for a sako 300 win mag.
Loaded up some 175's and seated them out to 0.05 off the lands to start with various charges of RL22.
The results were short of fabulous with 50 yard groups anywhere from 1 to 2.5 inches. Not what i expected.
Did some reading on several other forums where the trick seemed to seat them very deep like down so the top groove is barely showing or half covered up by the neck.
At 0.30 off the lands, it puts them in the same hole at 50. The groups shrunk the deeper i went until i hit 0.30.
Hope this saves somebody some effort on loading up the barnes. If you are seating farther out than saami spec with bad results try going deeper and see what happens.