Tikka build: 300 wsm freebore

[freediver111]

Rebarreling a Tikka long action magnum to a 300 wsm. I also already purchased an after market mag to allow longer bullet seating without mag constraints.
Pretty simple question, I know many of you have built 300 wsm’s off a Tikka action, so did you go SAAMI spec or custom freebore? I’m looking at primarily shooting 200-215 grain rounds. I’m planning to start load development with the 212 ELD-X’s if I can ever find some. Barrel will be a 1-9.5” twist.
I’m assuming keeping it SAAMI will not be an issue and loading close to the lands with the long mag box will also be no issue, so what am I missing going with a custom length freebore?


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[wind gypsy]

SAAMI freebore should be pretty good for 200.20x and 215 bergers. You could go a little longer for 215s but its not necessary if the reamer has the standard 0.188'ish freebore. I think 212s would benefit from a little more freebore because they have a longer bearing surface.

 

[Packmansion]

I'm in the same boat. Any lessons learned you could share?