I slugged the bore on my EMF 1858 Remington Replica and was surprised to find the slug measured .460 which is way oversize for a 454 ball. The cylinder chambers are smaller than 454, the forcing cone is large and I am concerned that the revolver will be inaccurate. My only idea to remedy the situation is to replace the barrel. I have looked at EMF's home page Navy Arms and Uberti, none gave barrel grove diameter. Any information on the correct size of the barrel will be appreciated.