Exactly what was done to true the receiver and barrel? I ask because unless the barrel threads were cut off and refitted, you can not completely accurize the receiver because the receiver threads need to be recut.
Just curious as to what amount of work was actually done to the rifle.
No rifle will shoot every bullet. To think they will is not practical. Even full custom rifles
will prefer certain bullets over others.
I really do not see a problem, you have a load that your rifle likes and it is plenty suitable for any game up to elk.
My simple recommendation which is the same I give to my customers, listen to your rifle, feed it what it wants. It is not the Accubonds fault that your rifle does not like them.
Shoot what shoots well.