I'm not personally aware of any Calvinists who "don't believe in evangelism", and I'm not well-read in Spurgeon's works, so I have no idea what you're talking about.
Oh, and thanks for the response re Billy Graham, but that wasn't what I asked about. I asked what you thought of Charles Finney's theology re atonement, and I noticed that you're dancing around the question.
I've never delved into his work because I was warned long ago that he had a few screws loose doctrinally.