I haven't tried any Barns bullets since the original "X" bullets. Then is was recommended that the barrel be cleaned of all gilding metal fouling before using the Barns. Does the same apply now? How about with Hornady's GMX, or Nosler's E-tip?

Shew me thy ways, O LORD: teach me thy paths.
"there are few better cartridges on Earth than the 7 x 57mm Mauser"
"the .30 Springfield is light, accurate, penetrating, and has surprising stopping power"