The Savage MSR-15 Long Range in .224 Valkyrie had serious keyholing issues regardless of what ammo I used. It has 1:7 twist rate. End result was it was given a new barrel.
I believe sending along target photos helped greatly. I had labeled each target with the specific ammo used. I think that also helped.
I believe sending along target photos helped greatly. I had labeled each target with the specific ammo used. I think that also helped.