Re: New Powder, retry all bullets?
For availability, effectiveness, and cost; I generally prefer either Sierra or Nosler.
In most cases, a Sierra match bullet has a corresponding hunting bullet choice that is deliberately designed to closely duplicate the match bullet's ballistic performance.
For me, the Nosler Ballistic Tip bullets are excellent broad purpose hunting projectiles that exhibit match bullet ballistic performance.
My load development goals take advantage of such relationships, and are intended to reduce the number of bullets and loads I develop and maintain to an irreducible minimum number. Same with propellants. I develop loads with non-match primers, make sure they all jump, replace non-match with match primers only if and when a significant accuracy gain justifies it, and I put the bulk of my energy into trying to manage neck tesion, which is where I find the most accuracy gain for the least experimentation.
Simply put, you change a load component, you change the load. Load redevelopment is necessary, and basically all you've accomplished by altering components is to impose an entire new regimen of load development upon the rifle's expected bore life.
This is an approach I would only follow when all other approaches are impossible.
After about two decades of handloading, I have experimented with just about every technique imaginable, and I have a broad imagination. The joy has long worn off, and it has become a chore, to be accomplished as directly and simply as possible.
Greg
