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There was an aritcle in, if I am not mistaken, The American Rifleman, many years back (1973 or so)about the barrel lenghts, and velocities. The 22 was at 16 inches optimum. When I stated optimum length I meant optimum for velocity generated not handling or hunting or any other purpose....strictly dealing with velocity. Anything longer than that length the velocity was remaining the same or actually diminshing. If I remember correctly the 30-06 dealt with in the same article was on the order of 28 feet I think. Whoever did the testing actually was using ultra long barrels in a pressure gun and choping off a foot or so at a time, firing and chronographing the results. Getting back to the 22 I am not sure if it was a .22 Short, .22 Long (do they still make them?) or .22 LR. I have not seen .22 longs on the shelf for years, of course they are nothing more than a .22 Short load in a LR case so it would make sense not to make them anymore.
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Carlyle Hebert
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