I’ve got the perfect one, it’s a ten shell / cartridge wallet for .375 H&H / .410. Five and five in two pouches, it unsnaps and flips open to reveal the two rows. Bought it from a lady in the Grande Cache mall who makes leather goods. Not that that’ll help find one, but I can put a pic up of the design when back to make. It’s slick as heck and spent a lot of time on my belt guiding the coast.