Lots of post of late have been about how long a barrle should be.I think about the colt foot rifles that were about 18-24 inchs in barrel.Later jagers at plains style length.Some of penn rifles with 38 inchers.While americas first rifle makers were germans the first customers were english,dutch,indian and lastly french of the southren states.All these folks had been makng guns of 40-50 inchs.I wonder if the 42-46 inch american rifles were spawned mostly by style.So many had been used to long guns before the saw thier fist jager.