Re: 410 rounds with 444 brass and 45 bullet?
I've never lost one, they live on the gun or in the gun case/gun bag but I can see how they can be easily misplaced if you're not careful. I've got some with 5, 7, 8, 10 and 25 round mags, that's much superior over a tube mag just as far as speed at reloading. Rarely needed more than one shot but nice to have the option to put some sustained fire down if needed. Tubes take a while to fill up and mags are just super easy and less movement. They seem to be very relilable compared to any semi out there also. Pumps/tube fed seem to be plenty reliable also.
I just prefer mags to tubes myself but either would work fine.
"Loud noises don't end gunfights.... well placed shots do."