I cant help with the Hi-tech. Thought they would not lead?Pistol.
These are Hi-tech coated bullets.
I did slug the bore to .3575.
Revolver? Should have asked.
Anyhow
Revolver down and dirty , bullets sized to throat.
Usually .001” over jacket is ok.
But as we all need to be aware the throats can be off size and different sizes. Along with the forcing cone being over/under size.
Down and dirty. Drop bullets down the cylinder they should not free fall through. They should also not need to be hammered through.
S nice resisting push through fit should get you there. Check each cylinder with a new bullet. I have no way to picture my bore scope anymore so I cant show you my old 38spl revolver with a diet of tumble lubed cast through it.