I just got a Finnlight 300 WSM. I haven't tested any loads for it yet, but have done a good bit of research. I think the best bullets for it are in the 165 - 180 gr range. I plan to be using the E-Tip 180's. Also, the Finnlight has a 1:11 twist which is the minimum that Barnes recomends for it's 180 TTSX. The magazine is short, so it doesn't give you a lot of seating options with some bullets.
If I wanted to push a 200 gr bullet, I would step up to the 300 RUM. JMO
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