Originally Posted by Hairy

If you reference the all-knowing, all-seeing Herter's PROFESSIONAL LOADING OF RIFLE, PISTOL,AND SHOTGUN CARTRIDGES from years ago, you will find the .41 S&W Magnum on page 417. Rim dia.=.492" Length of case= 1.290" Rim thickness=.060" loaded length overall=1.590" These are the same dimensions listed in the LYMAN CAST BULLET HANDBOOK for the .41 Remington Magnum.

I would suspect the .41 S&W Magnum and the .41 Remington Magnum to be one and the same. But, then, what would I know.