I guess ideal barrel length would depend on the purpose of the weapon. One bought for hunting or target shooting should have a long barrel, one bought for cowboy action somewhat shorter, and one for personal defense shorter yet. I love my Colt New Service Target in .45 Colt with its 7.5" barrel, but I would also like a Ruger Alaskan in .454/.45Colt. That 2 1/2" barrel and adjustable sights makes for a very appealing package, especially in a gun built to handle far higher pressures than a .45Colt would ordinarily develop.
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