Well FN is Fabrique Nationale made in Belgium. If the action is already drilled for bases, I hope they are correct.....There are 2 diffwerent bases for Mausers with the stripper clip hump and those that are commercial varities. Not to worry....a Smith can fix and is not a big deal. There are only two actions....a large ring and a small ring....your's sounds like a large ring....the Turks made both. They make great sporters for 243 to '06 actions.....the 308/284 varients probably preferred. Good luck w/ your project. Regards, Rick.