Roger, forgot to tell you the other day I caught up with my nephew, grandnieces & their boyfriends, they gave my 'new' ZKW465 hornet a run so I'm reloading for that now! Offered the 450/400 to try out, only young Riley was game & gave it a a go, the nephew did rather well considering he's got far better eyes than me! We used the open topped ammo pouch you made, maybe not in a hunting situation but walking around, reloading from it gave no issues & held the empties without the slightest problem.
Job well done mate, love your work, winner for me!