I recently acquired an older (I'm thinking mid 80s) sako AV in .338 win mag. I'm curious as to what the actual model is and year of production might be? Serial number is 616509. Any information on this rifle would be appriciated, I've read mixed reviews on the sako over the years and don't know if I can expect this vintage to be a high quality shooter or not. Ideally I'd like to make it a medium to long range gun for big game, 400-800 yds would the rifle in stock form be up to snuff?