D-4297
Gold $$ Contributor
Like to get some advice from those who have been at this longer than me and are in the "know" about these things . Due to the recent shortages of some Berger Bullets for us F-Class .308 shooters , I purchased several boxes of 190gr Sierras for practice , and to save my Bergers for the SWN .
Now comes the problem . I am seeing a thin line of copper towards the muzzle end after my normal cleaning process that wasn't there with the Bergers . Is it just a slightly softer jacket on the Sierra's causing this issue ? I clean well , but not aggressively , with any type of Bore paste . Any thoughts or suggestions ? Barrel has roughly ,600 rounds on it and still running high 190's .
Now comes the problem . I am seeing a thin line of copper towards the muzzle end after my normal cleaning process that wasn't there with the Bergers . Is it just a slightly softer jacket on the Sierra's causing this issue ? I clean well , but not aggressively , with any type of Bore paste . Any thoughts or suggestions ? Barrel has roughly ,600 rounds on it and still running high 190's .