RE: 270 wsm
A buddy of mine just took a Canadian Bull Moose with his Tikka T3 stainless in 270 WSM (2 shots and it was down). He bought the rifle because he had surgery earlier in September and wanted to avoid the kick of his 300 Weatherby.
He absolutely loves it and its very accurate out of the box. Hewas using Winchester 140 grain failsafes (Winchester Ammo).
Tikka's are very good rifles, enjoy the rifle you made a good choice.
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