The 376 Steyr is dead as a hammer, but none-the-less is a very capable cartridge....one that makes lots of sense to me. I found the 376 to be perfectly sized for a military 98 Mauser, with only a tiny bit of work required to make feed with perfection. My 376 Mauser weighs just over 8 lbs and is noticably more comfortable to shoot than my 375 H&H rifles. Haven't sold my H&H rifles, but could do without losing capability. The new Ruger cartridge will gain nothing on the H&H, IMO.
Otto