Sorry to jump in here without being asked, but I have used barrels cut for impact in my fusion SAs, just screw the barrel in, torque it to spec and off you go! At least with the 3 Fusion SAs I own… no I’m not affiliated to the OP
What's the weight of the alpine cut action? I saw 25oz on a website but I honestly don't believe it. That seems quite light for a full steel body/bolt combo with no weight reduction other than a split pic rail. Maybe they went with a full aluminum bolt knob too.
Great price on action. If you buy this action from this guy I’ll give you a discount on a 6cm barrel for this action. You escape like a bandit on a great deal