Interesting find

[BJB]

A man owing me some money paid with about 15 gal of mixed brass, figuring this is all im ever going to see I took it home and started separating it. A lot of odd ball brass and in the bottom of the tub was 12pcs of new 45 basic brass 3 1/4 long. Never seen this before. A quick look on google  and I guess this can be used for 45/70 if cut down but could not find any reference to a firearm using 45 basic. Any Idea of what it was used in/for

 

[cj0e]

You're right on the use with 45/70; it can also be used for 45-90 and 45-120.