My BIL is going to Switch Barrel on His Batt action, shouldered barrel, for His 1,000yd rig. He will shoot the 6Dasher barrel in the absence of wind, and go to 6x47 Lapua when the wind kicks up. His very competent Smith says the barrel should be torqued to 100ft/lbs to insure good harmonics. This may be where the 100fp figure is coming from? I have always felt that 40fp's was plenty on My Savages. With My Shooting, I doubt any improvement in harmonics would even be noticeable?