I've only run across two different takedown centerfire boltguns, over the years.
The slickest was a European model, whose bolt locked into the rear of the barrel ILO the action.
The barrel was a slip fit in the front receiver ring, held by a grub screw.
The barreled action was removed from the stock, the grub screw loosened, and the barrel separated from the scoped receiver, etc.
The other was the commercial, Model 70 clone, Dakota Traveler.
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