Why drill when it's already ready?
Takes some fitting but very solid.
https://www.acmemachine.com/accessories/sks-one-piece-rifle-picatinny-scope-mount/
I have twin boys. Fraternal, not identical.
One of 'em is a real gear head like his dad used to be.
I love him to death but when he borrows my tools and doesn't return 'em...yeah, really works my last nerve!
Good luck at the show today @Rabbit2047 - let me know what you see steel case .223 moving for. Not what it is priced and sitting, but priced and selling.