Hi Bagheera,
I remember seeing those cross bolt sling studs, don't remember which rifles were they for. I simply use uncle mikes wood screw studs which come with swivels. Today I took one out of my Diana52 (really heavy gun) and put in the PCP for mounting a bipod. Never had any issue with the wood studs till date. For Tx and HW97 front swivel is mounted on a barrel band and rear one in stock.
HTH
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