If I could piggy-back on this a bit. When I was looking for rimfire barrels, it seems that most were fairly long and heavy almost always over 20-22 inches and heavy profiles. I see that the Krieger barrels have finished lengths of 24-26 inches. Since 22lr barrels can't be cut down from the muzzle end due to the black-magic of constriction, where are people finding the 16-18 inch barrels?
While on some of the rimfire bench forums people would say the Krieger barrel is not what you want! There is a guy running Kreiger rimfire barrels and he is still setting records and winning nationals right now! Just google Kevin Nevius with Lapua. He also makes a bad ass reamer.