400 NitroExpress,

I got alittle more information on this Jeffery. The owner called me back and took gun apart as we talked and here is what is on the water table. 500 cartridge 3 1/4 case 177 grs 650 grs bullet. It has the double eagle head proof mark also. Serial # is in the 4XXX range. Any thing more that you know about it would help.

Thanks Sam