The collection of non military muzzleloaders in the Buffalo Bill Museum in Cody shows ramrods mostly equal to barrel length. There are a few with RR's longer than the barrel, likely an inch or so. There is also a Henry & Son Trade rifle in 38 caliber that has a ramrod that is 2 to 3 inches shorter than the barrel. Based on all the wisdom shared above, that must mean that the owner had really long fingers, shot really heavy loads, or part of the ramrod got chewed off by a bear who was not happy being shot with a lowly 38 caliber rifle.