Alright I need some experienced input... The way I've seen it/been taught to see it is that 1" of added barrel length will result in about 50 fps added velocity... But I've recently read a few articles that seem to suggest otherwise. For example: The way I was told, a given bullet which will reach 3000 fps from a 28" barrel will probably be capable of about 3050 fps from a 29" barrel given that the other elements are roughly the same (powder charge, primer, twist rate, bullet weight, etc...) Is this a correct method of thinking or is it not even close to correct?? How much does it differ with different cartridges? If you could please give some examples from your own experience it would be much appreciated... Thanks in advance!