Ya, UMC makes a nice, accurate and cheap 130grain .38Spl FMJ. At standard pressure velocities, copper fouling is minimal bordering on non-existent. So does CCI/Blazer, many others.
The Nyclads are even cleaner. But being hard to find, FMJ roundnose is a nice second choice.
What else...oh ya, don't shoot the Nyclads until your barrel is clean
. If the leading ain't too bad, use a box of FMJs to blast most of the leading out, then clean what's left over real well. And *then*, starting from a clean barrel, the Nyclads will leave it just as shiny, except for some powder residue that'll wipe right off.
Shoot Nyclads in a barrel that has lead chunks all over the inside, and you might end up plastic-plating the chunks
.
(That UMC ammo was what I used to do 50yd shooting at a small metal garbage can, about small torso size. Damned if I know what the groups were, but I hit it with three complete cylinders in a row from my early Charter Arms 2" snubbie. Somebody else tried to do the same with a full-size Glock .40S&W and batted about .600
. Lotta fun.)