nsonant with the well-established rule in this circuit that grand jury testimo- ny is generally not disco ble on pretrial r motion. United States Harflinger, 436 F.24 928, 935 (8th Cir. 1 0), cert. denied, 402 U.S. 973, 91 S.Ct 1660, 29 L.E4.24 137 (1971). [14) Waggoner was not called as a wit- ness a