http://www.midwayusa.com/product/963504/tactical-component-mfg-mag-xtender-extended-floorplate-remington-700-long-action-polymer-black

Anyone have experience with these? Im wanting to make my little .223 hold a few more shells, not really sure why just think it would be nice on those gopher hunting outings when they are running around faster than you can reload.

Do they work? Does the gun still feed well? Is it worth it? Gopher hunting and target shooting is the only real use I see for this but at then at the same time it almost looks pointless. Thoughts?