what you did not like the answer from your other post? you have a rifle that has spent time sitting in warehouses and store shelves. it finely made it to the top of the pile and your home. I sure there is nothing more sinister then that. If you want to research its history, ask the dealer how long he had it and where he got it then you can ask the wholesaler the same. they all have records with dates if they have the time to look.
your bore scope will show it has been fired.
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