I've read some pretty negative posts concerning Lilja's barrels here over the past several months. My experience with Lilja 22RF barrels is limited to one titebore blank I ordered from them for a CMP Rem 40XB that I had Jonathan Elrod at Modacam Rifles convert to a repeater using V-22 mags back in 2015. I ordered the blank in Rem sendero contour to finish at 26" - my thinking at the time was to keep the finished rifle as close as possible to my CF PRS rifles. I did the fitting & chambering on it, and also did a Krieger blank in the same contour, but finished at 22" at about the same time. I've shot this rifle more with the Krieger barrel than with the Lilja, but have enough experience with both to make a valid comparison. The Krieger is a hammer, comparing favorably with Bartlein & Kriegers on a couple of my Gen 1 V-22 repeaters - but the Lilja consistently shoots groups just a bit tighter.
Since then, I've fitted & chambered barrel blanks from Bartlein, Benchmark, several more Kriegers, and several Shilen select match ratchet rifled blanks for a couple of Gen 1 V-22s, one Gen 3 V-22S, and several CZ 455/457s. That single Lilja is still somewhat of a standout where accuracy's concerned, and may be the single most accurate barrel I've done for a repeater. The only thing I've noticed is that it likes to be cleaned every 120 or so rounds to maintain its best accuracy, but all I'm doing is a couple of wet patches (using Ed's Red), followed by a couple of dry patches.
Note that I have no experience with any of the pre-fit Liljas, and the Shilens I've done for the CZs were all glue-ins, allowing me to omit the cuts for the grub screws their OEM barrels have. Aside from a JGS Nevius reamer I used on a Shilen for my V-22S, all the other barrels were chambered with a PTG EPS reamer. I have no idea what reamer(s) Lilja uses on their pre-fits for bolt rifles. Certainly not a definitive study in typical quality of Lilja barrels, but I wanted to throw that out there for anyone considering buying one for a CZ455/457.
