I recently acquired a Ruger m77 mk II stainless with Zytel stock, 25-06 caliber. The rifle seems to have a heavier than normal barrel. Barrel is 24 inches long, 5/8 in at muzzle. I have a 308, Woodstock blued barrel, and the Zytel stocked rifle is definitely heavier barreled. Is the Zytel stocked rifle HEAVY barreled or just happen to have a heavier barrel. Thanks for info.