Looking for 375 ruger brass

Like other obsolescent cartridges it may be necessary to reform another cartridge; 300 PRC brass is available, Prophet River has Lapua.
 
I wouldn’t say it’s obsolete. Not among the most common so it isn’t getting pumped out in mass quantities, but over all I would say the cartridge is here to stay.
 
There is an older thread on here relating to fireforming .300 WM brass and ironing out the belt. Apparently it gave satisfactory results. The man doing the experimenting was C-FBMI, who was pinked some time ago, so it may take some digging to find the thread.
 
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