Thanks for the responses. I plan on most of the loads probably being loaded with Trail Boss so high velocity is not the deal. I know the deal of fit is king. I cast for .41 Mag, .38spcl./.357 Mag, .45 acp, and 9mm. I have no problems with lead in any of them. In fact the gunsmith asked what I shot in my Mod. 67-1 S&W .38 spcl. after worked on it. He did not believe that I shot 800 rounds though it without cleaning.
I was asking just to find out if they would obturate the barrel without the checks.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.