I have read several posts concerning barrel break-in.
One said not to use moly bullets (during a lengthy shoot/clean rigamarole), others say not to worry about breaking a barrel at all, ect.

My thought is to run a box of molys through my new M70 ultimate shadow stainless 300 WSM. If there are any pores (snags?) why not fill them with a slicker material than copper, sort of a teflon coating...anyone done this?

The first shots/box will be to sight in a scope. probably a 3x9 or so for big game