Blimey, unless you are a target shooter why do this?
I see this a lot in the UK, the hunter trying to achieve the 'clover leaf group' at 100 yards, half the time they couldn't hit a barn door, so blame the rifle and cartridge.
I always say to them 'the animal doesn't have a clover leaf heart, stop chasing, get hunting!'
I started to use Barnes copper, at around $100/50 I can't afford to do ladder tests.
Factory at about $100/20 (measure a factory round, can be a shortcut)
For me, I don't shoot at maximum load, and back off the lands around 30thou.
Works for me.
Cheers
Richard