How much would a typical grain bill for a 5g batch weigh after it is drained? I am just looking for a ball park figure. Looking at throwing together a biab system and I would like to use a simple rope hoist to lift the grains out of the kettle to let them drain. Once the grains are out of kettle I will fire up the element and continue on up to boiling temp. Before boiling I would like to be able to remove the grains and toss them in the trash. Approximately how much should I expect them to weigh at that point?