i recommend buying a 100 round hopper if your worried about ammo for pump. GXG makes a 100 round mulitcaliber 100 round holder. all you have to do is remove a little piece of plastic inside that makes it shoot from .50 cal to .68 cal. around $20 if not less and will help u store more rounds in the hopper to not constantly worry about it. If you decide to keep that little (what i asume to be 50 round) hopper u can shoot till it gets to about 5-10 rounds then fill up. those hopper feed better the less rounds are in because the weight on top makes it harder to feed since their still gravity fed.
i recommend buying a 100 round hopper if your worried about ammo for pump. GXG makes a 100 round mulitcaliber 100 round holder. all you have to do is remove a little piece of plastic inside that makes it shoot from .50 cal to .68 cal. around $20 if not less and will help u store more rounds in the hopper to not constantly worry about it. If you decide to keep that little (what i asume to be 50 round) hopper u can shoot till it gets to about 5-10 rounds then fill up. those hopper feed better the less rounds are in because the weight on top makes it harder to feed since their still gravity fed.