I saw those two grouves below.
It is a bit like a Barnards, tikka ...and the sako 75,85 and A7 where the recoil lug is not an integral part of the action.
The reason they use that system is to cut down on machining costs.
Because you are casting you can do pretty much anything ,like a surgeon action shape for example, because you have ALREADY cut on machining costs.
Looking forward for the finished action.
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