Thanks for the input Hitzy and everyone else, I'm now leaning toward this being S&B brass. I don't think the rim has been machine formed when I compare it to other Rem or Win brass. Also, I think a machined rim would have closer tolerances than what I'm seeing with this stuff. It's also heavy, 257 grains compared to 233 grains for my old WW brass so I think I'll be starting with pretty conservative charges and working up carefully.
I have some vintage Herter's 7x57 brass, and the box is stamped "Made in Canada", so presumably, Dominion/C.I.L. It probably varied depending on the caliber and lot who actually made it.
I have some vintage Herter's 7x57 brass, and the box is stamped "Made in Canada", so presumably, Dominion/C.I.L. It probably varied depending on the caliber and lot who actually made it.
Yes they made brass for them Dominion Cartridge Co as you say I remember shooting a lot of 9mm back in the day of herters. Herters have never made anything themselves but those boxes also look newer than the 50's which I thought was the time they changed names so maybe CIL
Canadian Industries Ltd 1955-1976
You're definitely right that Herter's wasn't a manufacturer, but back in those days, you could trust they ensured the quality of whatever they sold and they had an iron clad guarantee on returns.