I had horizontal stringing in my 270 using RL22 and a 130gr TSX. I was determine to use this load as I hit 3,225fps, safely. To cure it, I tried 3 different brands of brass, several different primer makes, played with seating depth and powder charge weight, and even re-bedded the rifle, thinking the old bedding had deteriorated. No change, still had horizontal stringing.
My rifle just would not shoot this combination. I cured the stringing by using H4831SC and H4350, but I gave up a little speed.
