Quote:
Originally Posted by snubbiefan
I can easily be corrected on this, but I believe MOST of the explosive power needs/does take place in the barrel and not the cylinder. That is a well-known warning to most experienced hand-loaders and in particular some rifle cartridges. You want just enough powder burned to start things moving inside the cylinder bore. If you down-load a round too far, all the powder ignites within the cylinder, which is not a good thing. I can understand how what is stated above can happen.
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To be more accurate, the goal for max power is burning the maximum amount of powder that can be consumed in the barrel of the gun without exceeding allowable pressure levels.
In a .22LR it might be 16-17", in some very overbore cartridges, it might be as much as 28". Don