Randy, ain't this fun? Another theory regarding F&I and Revolutionary War horns is why the horn was wore on the left (or right side) by the 'soldiers' is they were already carrying their 'cartridge boxes' on the right side not leaving any room. Plus the soldiers didn't want something else in the way when 'in the line' firing upon the enemy. The horns they did carry, whether they were right or left side, didn't really manner as long as they had a powder horn to carry their extra powder. Presumably the horn's availabilty helps to continue the fight should they run out of 'pre-made cartridges' and/or to make more once back in camp, if they survived.
And yes, I'm beginning to use all round stock for making my staples now. As you pointed out once the strap is applied any 'niceities' embedded or incorporated in the staple are lost. Don't you think our forefathers thought of that too? Like today, time is money, and more used on unneeded embellishments to improve function or form are wasted,,,, and unprofitable.
Good exchange.