KF... I agree it's best to use a light .357 rather than a .38. And I also agree on avoiding exposed lead bullets.
My favorite practice loads for .357 are:
Rainier 140 gr. Copper Plated FP bullets over 8.5 gr. of PowerPistol. VERY clean burning, no smoke, little residue, nice efficiency. From my 3" revolvers I get about 1049 fps... which is definitely hotter than .38 spl., but much milder than full house .357 loads. I love PowerPistol. Much of my practice shooting is indoors in close quarters, so I especially like a very clean burning powder and copper plated or jacketed bullets... much healthier that way.
My defense load is Winchester 145 gr. Silvertips which give me about 1300 fps from a 3" tube (spring, summer, and fall) and Speer 158 gr. Gold Dots (winter). I choose the 158 gr. for winter because it offers even greater penetration than the 145 does and I believe that penetration is the most important element in terminal ballistics... plus you never know when your bullets might have to go through an arm or two, some arm bone, heavy leather coat, layers of clothing, layers of gross fat, muscle... before finally getting deep into the pumphouse.
My practice load is much milder than my defense load, but still packs a little punch just for a nice mild "magnum" feel.