Want a medium bore(.375 ) relatively low pressure cartridge for my handi rifle. In my research I came across the .375 Renner, it is based on the 45/90 case formed in a shortened .375 H&H sizing die. A few loads are listed on his web site - they are quick load workups, 200gr j-word,IMR 3031,2418fps @ 26703 psi, and 245gr cast, trail boss, 1496fps @ 27898 psi. Taking into account that Handi Rifles are chambered in rounds with much higher pressure and almost the same base dia. is this a good idea?