hanco,
In fact John Nosler made his son and grandson promise they'd never change the Partition. Which is why the AccuBond became the plastic-tipped equivalent--that, and the previous introduction (and extreme success) of the Ballistic Tip.
These days there are even Ballistic Tips that act much like Partitions when they hit game.
I know you've mentioned it before, but where do the tougher BTs begin? Is it strictly by caliber, or is it by weight within the same caliber (excluding ones designated as "Varmint" of course).
Thanks.
