I preferred the Nosler 95 Partition for deer with the .243 myself. But, I see that the old wives' tale about the 70-grain bullet being the "best" long range bullet for varmints has raised its ugly head yet again!
Bullet.....muzzzle fps......400 yd drop......400 yd drift
55 BTip......4000............. -9.9"..................14.0"
70 BTip......3400.............-13.5".................15.0"
The 55-grain BTip has what it takes at long range, and really improves the performance of the .243 on varmints. Less recoil too.
Disclaimer: if the 55 BTip doesn't shoot accurately in your .243, it makes no sense to use it at long range.