You need a new buttplate. Dutchman woodworks sells a pretty decent copy, that is made of ureathane, instead of horsey hooves, and it will last much longer. The gun also looks like a strip and clean by a good double gunsmith would do wonders. Kirk Merrington can do wonders, but, he is in Texas, and you appear to be in Canada.
Otherwise, a serviceable gun that will be a pleasant shooter with light loads when hunting, if it comes close to fitting you. If it doesn't, get rid of it-a Darne stock is not easily bent.
I suspect you will find pretty tight chokes in the barrels.
Best,
Ted
