Marvel
.410
How long one can keep shells in them before the elastic wear out? I bought 3. I'm planning on keeping the one on the boomstick loaded up as they do no good empty. The other 2 on stand-by. Anyone experience how long the elastic will remain tight? Hard as hell to get the shells in when new. I got the 7 round cards to put on a stock 590, they are too long to be effective mounted to the receiver so I put it on the buttstock.