Are berger bullets really that much better ???????

[82boy]

Is it true they have to be into the rifleing to get the
best accuracy? Or do they like to jump into the lands

That depends more on your barrel.

[helotaxi]

That depends more on your barrel.

And the particular bullet. The really long ogive of the VLDs often like to be touching the lands to keep them from yawing into the rifling as they leave the case. Their more conventional bullets act just like any other bullet.