The reason the carbine ammo was loaded hotter was to overcome the increased mass of the carbine barrel/receiver and cause the action to function properly. Don't know for sure, but since a W+F 06/29 does not have this increased mass it would seem that the hotter round would not be good for the action. Kind of like shooting hot submachine gun ammo in a Luger pounds the bejeebers out of the toggle train and eventually leads to cracks or worse, spontaneous disassembly. Plus, original carbine ammo is scarce and very, very expensive

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