I have one on one of my 457s and it initially suffered from extraction problems:
On a clean chamber after only 5-6 rounds, so with just a touch of fouling it would stop extracting, and I decided to make a jig in order to polish the chamber from the correctly sized felt tip and a drill stop so the tip wouldn't go past the leade area. I used Flitz which, depending on who you talk to
runs 6,000 - 8,000 grit (Simichrome and Mag polish are ~ half that, more abrasive).
Anyway, the op worked, even if at a cost - one of the most esteemed RFC members and my favorite posters called me "Bubba"

🤦‍♂️

, but now the rifle with that barrel hangs right in there with the 3 Liljas, and I do recommend the LW barrels.
One thing already mentioned above that imo is worth repeating is that, depending where/how you buy it it may or may not come with a thread protector - mine didn't and it took me every bit of $150 in various protectors that based on the stated dimensions should fit but didn't to finally find one that was "ok".
Here is something else to consider, you are saving... $170 (not including the protectors

🤦‍♂️) over the Liljas and imo this amount should be put in the context of one's small arms budget

. Neither one is in stock right now btw.