ruger scope ring question

I have a ruger 77 in 300rcm, and with the scope I have, I have to really crawl up on the stock to get a full view through the scope. My question is this. Does Ruger make an extension ring in stainless to where I can back up the scope some, or what would be a fix for this problem. I thought about getting a muzzleloader scope that has substantially more eye relief, but not sure that is the way to go or not. Suggestions would be much appreciated. Thanks