SharpsNitro,

Years ago I built a rimmed .450 Watts cartridge, using flanged .375 H&H Magnum cases. I tested the loads in a Winchester High Wall and then had Krieghoff make up a rifle chambered for the cartridge. However, since the only .375 flanged cases available at the time were Berdan primed Kynoch, I foolishly parted with the rifle, which I have regretted ever since.

I presently have a replacement being built in Germany. Using present day flanged .375 H&H cases, case forming and load development is a snap, and I'm looking forward to seeing it next month on a trip to Germany. Nothing like using a case designed for smokeless powder in the first place.