Posted by MarkB_MI on October 02, 2013 at 02:46:42 from (75.198.40.168):
In Reply to: Finally got one!! posted by Goose on October 01, 2013 at 20:41:12:
Some guys did velocity testing with different barrel lengths for different cartridges by cutting a barrel down one inch at a time. Here's a link to their results for .45 ACP. In most bullet weights, going from 5 to 16 inches should get another 100 feet per second, which is significant for .45 ACP, which runs 1000 to 1100 fps for most loads. On the other hand, the normally subsonic .45 bullet will be pushed supersonic, so it will probably be quite a bit louder coming out of a longer barrel. Note that muzzle velocity actually drops going from 16 to 17 inches.
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Today's Featured Article - Fordson Model N: Field Service Operations and Lubrication - by Anthony West. The daily or weekly servicing of any vehicle is of the utmost importance, and in days gone by when our favorite tractors were doing an important and Commercially vital job on the farm, these service operations would make a major difference to the running costs and economy of the farm. This being so, it surprises me to see how many enthusiasts attending rallies, shows etc, seem to be unaware of the importance of this constant attention. Possibly the modern machine with its 6,000 mile or even once
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