Dublin Salts. 10oz Thomas Faucett Roasted Barley. CaSO4 4.4g, CaCl2 1.2g, MgSO4 0.6g, NaHCO3 1.0g, acorbic acid 3.0g, Kmeta 0.3g. Mash low.
Based on boiling 7.10 gallonsliters at 1.040 for 30 minutes, this will decrease your wort by 0.50 gallonsliters, bringing your after boil OG to 1.043. You wanted an OG of 1.046. It looks like it will be under.