Bulk amorphous Fe_65.5Cr₄Mo₄Ga₄P₁₂C₅B_5.5 rods with diameters of 1.5–3 mm were prepared by copper mold casting. Besides casting, bulk amorphous Fe₇₇Al_2.14Ga_0.86P_8.4C₅B₄Si_2.6 samples in the shape of discs (diameter of 10 mm and thickness of 3 mm) were prepared from melt-spun ribbons by high-energy ball milling and subsequent compaction of the resulting powders in the supercooled liquid region. The as-cast amorphous FeCrMoGaPCB samples exhibit a low coercivity, below 10 A·m⁻¹. In the case of the FeAlGaPCBSi alloy, the milling-induced stress causes significant differences in coercivity between the ribbons and the powders. The relatively low coercivity of about 5–10 A·m⁻¹ characteristic for the melt-spun ribbons increases after 1 hour of ball milling to a value of about 2200 A·m⁻¹. Subsequent annealing of the ball-milled powders leads to a decrease of H_c by a factor of 10 to about 220–250 A·m⁻¹. The bulk samples prepared by hot pressing of the crushed ribbons show a coercivity of about 120–140 A·m⁻¹. For both alloys, thermal stability measurements show a distinct glass transition, followed by a supercooled liquid region of 60 K for Fe_65.5Cr₄Mo₄Ga₄P₁₂C₅B_5.5 and of 30 K for Fe₇₇Al_2.14Ga_0.86P_8.4C₅B₄Si_2.6. For the Fe_65.5Cr₄Mo₄Ga₄P₁₂C₅B_5.5 alloy, crystallization of the amorphous phase as observed by in-situ X-ray diffraction measurements in transmission configuration occurs via the formation of a metastable intermediate phase. The phases observed in the crystalline state obtained by heating do not correspond to those occurring after slow cooling.