 First-half profits from J Sainsbury PLC LSE:SBRY next Thursday, 3 November, are expected to be at the bottom end of the supermarket chains guidance range from modest sales growth and tighter margins. Shore Capital, one of the companys house brokers, forecast an 11 decline in pre-tax profits to 318mln on grocery sales up 0.8, Argos sales down 5 and clothing sales down 1. 