Originally Posted by tri70
This says nothing about burn rates and the % of powder burned from a specific powder, the article speaks in general terms. It's an interesting article but barrel length and powder do make a difference otherwise they would not publish so many manuals and load recipes. Nosler manuals will list most accurate powder for bullet weight and specific barrel length, water weight of the case capacity, COL.
Barrel length does make a difference in velocity, not the amount of powder burned as all the powder is burned up in the first few inches of the bore regardless of barrel length.
You are correct Nosler does list those items. As to the different barrels, take a look at the Twist rate. Nosler used a 24 inch Lija with 1-12 twist with bullet weights from 34gr up to 55gr. For heavier bullets from 60-80gr the used a 20 inch Pac-Nor 1-7 twist. Lyman 48 also used two different barrels a 1-12 twist for lighter bullets and a 1-7 twist for bullets 69gr,77gr,80gr.
Looking at Nosler's data I could not find any correlation to "most Accurate" load tested and burn rate. Some bullets tested liked fast powders, some like Mid range burners and some like slow burners all out of the same test barrel.