In 308 Win these "hotter" rounds should not harm your barrel in any way (same for the Federal High Energy, etc)
Where the barrel throat gets damaged is with the big boomers that are pushing case capacity to the max.
Personal experience: With both my Winchester 308 & Remington 700 VLS in 308, When using Light Mag.s or High Energy I give up a considerable amount of accuracy over their std. velocity "Premuim" Ammo.
Example: out of the 700, Federal's "Premium" 180gr Nosler Partition load gives me 1 to 1-1/4 inch group, but when I tried Same bullet in the "High Energy" the groups aproached (& sometimes passed) 2 inches.
Gun info: The 700 (Like the Winchester) is a 1:12 twist (26" heavy barrel) and will shoot the 165 & 168gr Sierra bullets to 1/2" at 100 yards all day long.