357 mag bullet

I don't know of a high volume commercial vendor selling bullets with gas checks. You may have to cast your own for that. I use a RBCS 2 cavity mould that casts 162 grain from wheel weights. I can shoot them at max pressures, velocities, and get zero leading. With Win 296 powder the bore is super shiny after, and will clean out the fouling left from a lower velocity non gas checked bullet using hotter powder.
 
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