I don't buy "hype", the testing done by Tom Kaye was pretty thorough, and realeased long before all this bore size business was even an issue for most players. I agree that it's definitely better to have a bore too big than too small though. Too small a bore and it drastically decreases your efficiency because more force must be applied to the ball to make it shoot, and your chance of chops is much higher because of the higher amount of friction, and higher force of the bolt needed to propel the ball. In an ideal situation, you'd be better of with a perfect bore match than one that's too big, that's all I'm saying.