Correct. Repro M1855/M1861 ramrods are made to a number of "variations on a theme" when it comes to the originals. What one will normally find is that the thickness and length of the swell varies.
What that can do is place the swell in places other than the ramrod channel location so that it can be loose, or it can be so out of shape that it nned to go under the upper band (wbich it cannot do).
A number of years ago, there were repro M1861 ramrods poping up all over, apparently made by different lads and shops without regards for the size and position on the ramrod shaft. Becauu the Italians socket fit and braze ratehr than fit, pin, and braze the swells they had/have a habit or bending or snapping off. So, a number of sources set out to feed the demand for one piece rammers that were lathe turned (again apparently without regards to original dimensions).
Also for the N-SSA community some were made longer in length than "regulation."
Also, a number of so-called "one piece" ramrods were peddled that were just the old Italian brazed socket types so were two and sometimes three pieces counting the threaded on tulip heads. Several reputable shops were embarrassed, or claimed to be embarrassed, when the scandal came out.
In gleichem Schritt und Tritt, Curt Schmidt
Not a real Civil War reenactor, I only portray one on boards and fora.
I do not portray a Civil War soldier, I merely interpret one.