I guess it could be used that way but not by me. Heck it might already be filled I didn't look. I know lots of guys lucked out with crazy over bores on Jimmy sixes, flathead Fords. and. SBCs. This could be one of those 1 of 1,000 that Winchester was so proud of. More than likely it didn't work and that is why I have it. Someone ran it long enough to wipe out the hone marks.