Wanted 30 cal or bigger barrel

pity you didnt ask sooner,had awsume marlin micro groove 30/30 barrel here but gave it away not so long ago these great lead shooting barrels if you can find them,got feelers out among military range shooters i know for 308 barrels with  burnt out throats,rest barrel usually fine but the boat tail bullets range shooters use erode the chamber throats out and not enough metal left to set barrel back and rechamber on some rifles so they just replace the barrels,used them before on projects so hope can find few more as they cheap,let you know if anything comes from this but could take a while mate.