What model 29 , they go from 29, 29-1 thru to 29-7 Look inside the frame when the cylinder is swung out. 29-? Add soft rubber hogue grips and go to shooting . About all it should need. If its a 29-2 or older keep the loads on the lighter side. . Shoot what is concedered the standard commerical 44 loads out today for the rest of the series. NO +P type loads.