Normally, usually, generally, (NUG) it was often the Ordnance Department practice to use the arsenal/commercial odd-ball ammunition with regular issue accoutrements as they came in protective "cardboard' boxes." For some weapons, all what was needed was to take out the tines and pop in the packets.
The second method was to use standard boxes, but remove the tins and substitute drilled wooden blocks kinda/sorta reverting back to 18th century thinking.
And the rarer, third method was to use firearm specific contract boxes. Or not. There was a extremely rare Henry rifle box that utiized driled wooden blocks that slid up and down in the box with a catch latch so the soldier could rotate fileld versus empty blocks to the top. Another limited, but more coomon that the "experimental " Henry box, were the redone Berdan boxes for their B C NM1859 rifles where an old M1841 box was resurrected and updated to 1861 specs. It kept its two tins, but utilized a drop in wooden block for each tin with holes to hold the fragile Sharps rounds.)
In the Artifact Pool, these are all rather rare as they limited in numbers to begin with, and many times boxes end up emptied of their tins or blocks over time. Plus, after the War with the transition to metallic cartridges in .58 and .50 surplus CW boxes were recycled by adding cartridge specific blocks or even just sheepsskin linings glued in. As a result, a goodly number of CW items were modified and used up as the new designs of boxes slowly came out.
It seems, for some reason, that when somne of these entered teh surplus sales market, they invaribly are missing their inserts whether tins or blocks.
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.