These guys May have, a Point,. Try Selling your Old 30" Barrel for, $150 -$175 and Buy, a New RemAge, 6 XC Criterion barrel with, a smaller diameter Muzzle and thinner contour ( their 24" Medium "Sporter" w/ .705 muzzle Diameter ) made my Rifle into, a very accurate, 9.5 Pound "walking Varm't"
Hopefully, your setup IS, a "Rem Age" with, a Barrel Nut ???
I remember now that, about, 5 years ago, I had bought, a Heavy, .820 Dia Palma barrel, slightly used from, a guy on Accurate Shooter and asked Jim at, Northland SS, IF he would, Re-Contour, ( Turn) the Barrel down for Me and, he said,.. NO !
He said, It would be, too expensive to tear down and re-setup their already Programmed, C & C machine !
I believe that, a New RemAge Criterion bbl. is not much more than, $300 ish Dollars New. Just, a thought ??
I got $200 ( minus, shipping cost ) out of my Old / used, Criterion 6 xc barrel, so I was very Happy to Pay, the Little,.. "Out of, Pocket" $$$'s !