Do you guys just start around .02 off lands?
I am shooting a pro Hunter bullet.
Only test one variable at a time.
I start with bullets 0.010" off the lands and then leave them alone and test increasing charges of powder.
Except for the big boomers, I start 3.0 grains below max, load 1 round moving up 0.3 gr at a time, just to check speed which is an indicator of pressure and also watch for signs of excessive pressure on the brass and bolt lift.
Then with 2.0 grains from max, move up 0.2 gr for three rounds each the last two grains up to max.
Test at least at 200 yards and good loads will be apparent. 300 makes it even more obvious.
The Pro Hunters have a tangent ogive and usually are not sensitive to seating depth.
What round are you loading?