An investigation of stimulated Raman scattering of shortpulse (6 ns) XeCl-laser radiation in Pb vapor is reported. Conversion efficiencies, based on peak power, up to 15% have been obtained for Pb-oven temperatures of 1260°C. The functional dependence of conversion efficiency, in the short-pulse regime, upon buffer-gas pressure and species differs significantly from that observed for long-pulse (> 20 ns) pumping, corresponding to steady-state behavior. Analysis of the data, and comparison with transient SRS in H2, yields an estimate of T2 ≈ 1 ns for the transient response time T2 of Pb vapor. The observed pressure effects are explained in terms of a reduction in T2, and hence Raman gain, by collisions with buffer-gas atoms.