Hey guys, I've been looking into building a .30 cal for long range (out to ~1mile) that does well in a Tikka action, and it seems a lot of guys are fans of the .300 WSM in this set up. I already have a chassis, scope, and 20 moa rail that I'd use. My 7mm Rem Mag is in it now, but I'd like to turn it back into a hunting rifle with a lighter stock.

So in the .300 WSM it looks like the freebore is kind of a big deal with trying to push the heavier bullets. I'd like to shoot Berger 200.20x's, and have been looking at what freebore works well with they, and am seeing FTR guys shooting them in .308 with a .170 freebore. And from what I can tell by the SAAMI chamber print for the .300 WSM, it has a .1884 freebore, which should be good for the 200.20x. 2.316-2.1276=.1884, print link below. Am I doing this correct? Am I even using the right wording? Anybody know or have experience with .300 WSM and 200.20x's? Also, would you go with a 28" or 30" barrel?

Thanks in advance!

https://www.loaddata.com/articles/PD...0300%20WSM.pdf