We studied the velocity of domain wall propagation, v, of Fe 69 Si 10 B 15 C 6 with different metallic nucleus diameter, d, and different total diameter, D (d = 14 μm, D = 33 μm and d= 18 μm, D = 23.4μm, respectively) in the temperature range between 78 and 300K and at different frequencies of applied magnetic field. It is worth mentioning that v(H) dependence is essentially not linear, showing significantly higher domain wall mobility, S=dv/dH, at lower field limit. Domain wall mobility, S, increases significantly with increase in temperature. From v(H) dependence, the critical field, H cr , associated with the change of the slope on v(H) dependence and critical propagation fields H 01 and H 02 for the lower and higher field regions, respectively, are determined. All characteristics, v(H) dependence, S(H) dependence and Her are sensitive to the sample geometry, i.e., to the internal stresses. The origin of such dependence on internal stresses is discussed in terms of magnetoelastic energy contribution.