Hey Duckhunter, in the past I converted a Sako Vixen from 222 to 6.5 Grendel. Bolt face is relatively straight forward enlargement, it's the mag box that'll be your problem as they are too narrow for a fat little case like the G & 6ARC. I imported a Sako PPC mag box, spring & follower from the US, then milled the action to accept it. If I can find my posts about it on the forum, I'll link it in.
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