I checked two Tisas .45 barrels and they have the rifling starting at the chamber mouth. That's the bad news. The good news is a fellow could get a replacement barrel, made of a more machinable material, and still be money ahead.
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If this was 10 years ago, I'd just pull a new barrel out of my stash. :) Sadly those went away in a move.
I guess I'll look elsewhere.
I just picked up a Tisas "Devil Ray" Bobtail Commander 1911 45 and pulled the barrel and plunked every load I had and they all dropped just perfect. Even my Lee 200gr RF Cast loads. Hopefully I'll get to the range soon to report on its functionality.
So far, I've not seen anything I don't like (except maybe the plastic base plates and followers on the Mec-Gar mags that came with it - but I was forwarned).
Just a heads up for those who might be interested, Buds Gun Shop currently has the 9mm version on sale for $424 (before CC fees, shipping, etc.)
As I said before: Yes, it's made in Turkey, which accounts for its low price. Not to get political, but Turkey has been straddling the fence between the USA and Russia for a while now. I wouldn't be surprised if Washington abruptly shuts off sporting arms and ammo imports from Turkey, like they did to Russia and China. Get it while you can.