Fired the Final Finish process on a new 338 RUM barrel. She shoots lights out and is not prone to copper fouling.
Wish I would have done a before/after comparison.
My Lilja 30" 3 groove 8 twist 270 AM barrel started dusting my go to bullet so a did a partial Tubbs on it. Used only 1/2 of the Tubbs bullets in each category completely omitting the roughest group.
Fired 6 shots post Tubbs with no dusters. Was pleased.
Zero didn't change.
POI didn't change.
No bullets dusted.
Was feeling confident enough to paste a penny @ 200 yds to confirm zero. Too tight to ruin a dime. Besides a penny is a bit bigger.
) Third shot is a bit off of optimum but still in the 0.3 MOA range.