I personally don't know about the x-caliber but the bunch on Preditormasters talk good about them. Also ackleyman11 here says they are good.
Worst barrels available I've seen are X-Caliber, out of better than a dozen I've had customers send in I've chambered one the rest went back because of how horrible the bore was, slugging the barrels was entertaining to say the least, they open up with contour. A couple 375 barrels I've had in were so sloppy on the largest reamer bushings made that it was unbelievable, worst part is you could drop the bushing and each barrel had a spots in it that it would tighten up then loosen up, one flared out like a blunder bust. I've seen one that you could see skips in the lapping, none of these barrels should have made it out of lapping cause if I can feel how horrible the bore is than someone who laps many a day should be one it. You have to check your twist rate on every one carefully also, they miss that too.
Thats a big difference vs. What everyones has said. No opinion, just saying..
I've had one that had just enough choke at the muzzle that I could get a brake on it but the whole rest of the bore slowly opened the whole way down, barrel shoots good fouls like crazy. NO consistency!That's interesting, the last X Cal I checked had a slight choke at the muzzle. It's a 6BRX and shoots very well.
It is hard for me to believe, based on my normal bad luck, that I got the one X-Caliber barrel out of twelve that was acceptable. Zero chance. In fact, it is so bad that the other day I bought a bandsaw. This is not a craftsman or Lowe's little homeowners hobby saw...it is the Cadillac of the bandsaws. For what it costs it should be. It had a warped table...ya get that!!!...one made in the history of this earth and I buy it...every single time!!!!! But I got the one out of twelve good barrel????? Yeah, Okay.
My luck is so bad, if it was raining kitty cats...I'd catch an extremely large black rooster. {Fill in with slang}
To answer your question: I have a McGowen 9tw 18" 6x45 lightweight on one of my AR's and am very pleased with it. Zero experience with XCaliber.Anyone have one? I was just on their site, didnt know they made them... got a variety of chambers too... tickled my fun bone... just wondering if they shoot good...