My 308Bellm and my 357Maximums took about two months.
Kike lived an hour north of me in Grants Pass Oregon until he moved to CO this year. I did a lot of chatting with him, and if you have an open mind and ask honest questions he has a lot of good info to share.
I think any gun enthusiast should read his website, even though it is TC centric, anyone will learn something from it.
