It would be original Mauser 1898 with full inner front ring collar, lever or inside trigger guard magazine plate release, old Model 70 type trigger plus two position tang safety and Kimber style stock. I have seen Holland & Holland Mannlicher .375 Magnum set up this way so it is possible. The biggest issues with old Model 70 are: gas venting system, fugly "boat oar" stock , floor plate release and POS three position safety.
