Developing the right load for extreme long range precision shooting may be slightly different than the way we would do it for close and medium range target shooting. Special care needs to be taken to ensure our loads display minimal muzzle velocity variation (MVV) while still getting the smallest group possible. Special attention to cartridge case consistency may be required in order to attain this goal. Determining the right powder charge may require using either the ladder method or OCW (optimal charge weight) methods. Either way you go make sure to keep an eye on your MV dispersion. See: http://optimalchargeweight.embarqspace.com/ for more details on OCW SPECIAL NOTE: Make sure your bore is in the same state of powder and copper fouling as you would anticipate it to be in the field. Although the above article and other posts may beg to differ on this point, for our shooting discipline (REAL WORLD extreme range precision shooting), we will need to ensure that our load will be the best suited for the bore conditions we most anticipate to exist when deploy in the field. A dirty bore will shoot differently than a clean bore. Develop your loads for realistic field conditions if the rifle is to be used in the field. Develop your loads for pristine benchrest conditions if it is to be used on a bench. For more information on precision rifle cartridge reloading: see the Ammosmith Reloading channel on Youtube All the music in this video was created by TiborasaurusRex, an unsigned artist. Song Titles: Wadi Watir and Under the Ice Music and Lyrics by: TiborasaurusRex Instrumentation and Vocals by: TiborasaurusRex Recorded by: TiborasaurusRex