U s 410 - 12 m/m all brass

Is the case with the above headstamp made by USCCo? Thanks in advance for any info.

yes, I think, can’t remember & not at home but sounds right

Home now & if the large US is found at 9 & 3 O’clock it is by U.S.C.Co. & isknowm with ball, various shot and dummy loadings.

Thanks, it does have the large “U S”.