Charlie, Like you, I sometimes like to mess around with ideas like a 1oz .410 load. I found some 9.3x74R cases and fire formed them in the .410 chamber. The rim and base fit right and the oal is 2&15/16". Since the S&W mod. 29 chamber is capable of handling more than 40K psi, I figured that the chamber wall thickness of the (non Parker) .410 is more than adquate to take just about anything I could load in this case. Anyway, the most shot I could get in this brass case (with thin walls, but sort of high base) was 7/8 oz using only two over powder cards (no fiber). As Dean mentioned, the pattern was pretty broad and inconsistent through the full chokes; maybe a grouse load as I have trouble conecting with that elusive poultry anyway
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Threaded Mode