For 6 gallons at the end of boil 70% eff
7lb Pilsner
7lb Vienna
2lb 3oz munich
2lb 3oz cara Amber
I leave a half gallon in the kettle and target 5.5 in the fermenter.
For an even 5 gallons at the end
5lb 12oz Pilsner
5lb 12oz Vienna
1lb 13oz munich
1lb 13oz cara Amber
Loose about an ounce of each for 72%