Ahh, things of beauty...
I put my daughters 243 aside last year when I was swamped with other projects. I've finally caught up and decided to get this thing shooting. I had a decent load with 95gr VLD's over RL-17 shooting nice when I put it aside. However, I've been fortunate with very accurate production rifles and wasn't satisfied with the 1 MOA grouping her rifle was giving me. I expect the little 6mm to do better.
I've decided to start over with a new powder selection that offers a full case fill and four bullets seated at 0.00, 0.030, 0.060 and 0.090 off the lands to get in the ball park a little quicker. Fortunately this little Ruger tactical will feed all of the selected bullets at their longest length from the magazine. Berger's new book touches on this seating depth drill and I've used it before with success. Generally one of these seating depths will group much better than the rest and further refinements with that depth by going .010 each side of it then .005 each side of that will tweak it's happy spot. Finally further refinements in charge with the winning seating depth will net the best recipe with the selected components.
I've chosen four bullets, two target bullets and two hunting bullets. Target bullets are 95gr Berger VLD and 90gr Lapua Scenar. The hunting bullets are 95gr Partition and 95gr Ballistic Tip. This rifle is a 1:9 twist 20".
I will foul the bore with one of the fouling rounds in the center of the box followed by shooting all of one bullet type into four separate three shot groups based on seating depth. This will be followed by cleaning and once again fouling followed by shooting all of another bullet type into four separate targets and repeat with the remaining loads.
This is generally how I work on load development. The wife has me tied up today and tomorrow, headed to work Sunday, hoping to shoot these things next week. Results will follow.