Fire lapping a barrel that has been treated with Tetra Gun Lube

[calvon]

I have a Bar-Sto .357 Sig barrel for my P229 Sig. I have firelapped it to the tune of about 100 rounds using your firelap kit. It still accumulates lead when I shoot it.

I have also doped this barrel with Tetra Gun Lube.

I want to lap this barrel some more. Do I have to remove every trace of  the Tetra Lube or can I just clean the barrel normally and begin firelapping? If removing every trace is necessary, what is the best  way to do it?

[Veral]

  I don't know of anything that will take Tetra lube out except a lot of jacketed bullet shooting.  Possibly lead shooting will remove it as well, as powder heat and abrasion are the thing that actually wears barrels more than the bullet.
  Are you using LBT lube?  Gas checked bullets? Those two ingredents will cure leading in any 357 sig I've ever heard of, even if the bore is a bit rough, which your's isn't after 100 lap rounds.