Joel,
Just a word of caution about shooting your Parker. Please don't shoot modern 3 1/2" 10 gauge shells through this old girl. Parkers of that era had 2 7/8" chambers. You can find 10 gauge shells appropriate for your gun at
www.rstshells.com and they are great game and clay loads. Most of us reload 2 7/8" shells by cutting down 3 1/2" shells and use Sherman Bell's data. If you are a reloader we will try to get the data to you. I do love my 10 gauge Parkers and hope you enjoy yours as well.
Kindest, Harry