i have a bolt action single shot shotgun that my dad gave to me lately, i refinished it like new (wood & steel), but i don't know its name, model number, & country of origin!!!it has a serial number: 71000 & there's a small maple leaf engraving (Canadian mark) on the barrel with the letter "F" directly under it; also the number 8.50 is engraved on the side of the barrel, can anyone help me in this???