I believe what you have there is a Savage/Stevens 311 that was made for Montgomery Ward. These models were manufactured from about 1920 until 1989. The #5000 leads me to believe it's an older model. Looks like you have a pretty nice one there, these guns were made for field use and many of them were used hard. I will see if I can help you date it when I get home from work.
"If a man does his best, what else is there?"
- General George S. Patton Jr