I have a Bar-Sto barrel in my BHP.40. I won a gift certificate in a match and was as delighted as could be. However, the drop-in barrel they sent didn't drop in. I called Bar-Sto and they asked that I send the pistol to them for proper fitting. Great! They fit the barrel and turned it around pretty quickly. It was remarkably accurate when it returned.
But...the .40 that had fed anything and everything for several years without a failure to feed, fire or extract suddenly became the least reliable gun that I owned. Wouldn't feed worth a damn, jamming up on the feed ramp, denting the noses of jacketed bullets and stovepiping regularly. It took another trip to the gunsmith to get it running right again.
So I have mixed feelings about Bar-Sto. I know that a lot of great gunmakers think the world of them, but my experience has led me to be more cautious about any modifications to my gun.
Chad