I just read a book called "Gregorian Strategy for Multiple Deck Blackjack." The book provides a revised basic strategy for play against multiple deck BJ. The author claims it provides a 1% advantage to the player. He makes a couple of undocumented claims:
1. The traditional basic strategy was designed for a one-deck game; and it is not accurate for a multiple-deck game.
2. In a multiple-deck game, although the ratio of cards stays the same, your chances of pulling a particular card are reduced, and your changes of pulling a small card are greatly increased. And, as a result, you will be dealt a greater percentage of poor starting totals.
He goes on to suggest a modified basic strategy that has some very interesting changes. And, although he has no statistics to back it up, he claims that his system beats even counters over the course of a 100,000-hand test.
Have any of you heard of the "Gregorian Strategy?" And if so, any comments?