What does Weatherby recommend as a break in procedure?

On Our Mark: Episode 11 - Barrel Break-In

Barrel break-in can be performed through a number of different procedures. It is important to note that our testing shows that not all barrels require the same amount of break-in. Many of our Weatherby rifles get close to their accuracy potential during break-in but accuracy continues to improve with more shooting.

We suggest a 20 shot break-in, utilizing two different factory loads (load 1 and load 2) to begin understanding desired barrel accuracy. If desired, after the break-in, begin experimental shooting with different factory loads as each barrel's accuracy is dependent on load and bullet combinations.

Our procedure is as follows:

1. Clean the barrel*
2. Fire 3 shots (Load 1)
3. Clean the barrel*
4. Fire 3 shots (Load 2)
5. Clean the barrel*
6. Fire 3 shots (Load 1)
7. Clean the barrel*
8. Fire 3 shots (Load 2)
9. Clean the barrel*
10. Fire 3 shots (Load 1)
11. Let Barrel Cool
12. Fire 5 shots (Load 2)  
13. Clean the Barrel*

*Recommended Bore Cleaning Procedure:

1. Run several patches with bore cleaner/copper solvent down the barrel
2. Brush the barrel with at least 10 strokes
3. Run 2 patches soaked in bore cleaner/copper solvent
4. Brush the barrel with at least 5 strokes
5. Run patches soaked in bore cleaner/copper solvent through until patches come out clean
6. Run 2 dry patches through the barrel
7. Run a small amount of lubricant through the barrel before storage