Hey Dave. All the articles I've read do not point out much if any difference in accuracy between stainless, and chromolly barrels. The difference is throat erossion, and barrel life. Here is an interesting article on barrel making, and types.
With this last two considerations uppermost in our minds, we come the place where stainless is king. If you are a benchrest or high power competitor, a stainless barrel is the way to go. Generally, the primo accuracy life of a conventional 416R stainless barrel will be a bit longer that blued chrome moly. If you hunt in soggy or salty conditions, you simply have no choice -- a synthetic stocked, stainless rifle is the only way to go. While 416R stainless is an improvement over blued steel, a new 17-4 type stainless barrel steel developed by Crucible Steel and BlackStar is by far the most corrosion resistant on the market. It is called SS700, and it is more corrosion resistant and erosion resistant than any other barrel steel currently in use. After two years on the market, barrels made from SS700 have consistently demonstrated a 3X-4X extension in throat life and commensurate top-drawer accuracy.
The entire article is: http://www.xtremeaccuracy.com/Rifle_Barrel.htm