"SAAMI COAL Limits Ballistic Performance
It is a fact that the ballistic performance of modern ammunition is directly limited by the SAAMI COAL standards that are currently in place and that rifle manufacturers build to. Even when a shooter understands the implications of cartridge case volume and has a chamber that allows them to load the rounds out long, the rifle itself (having been built to feed SAAMI length cartridges) won�t allow the shooter to do so.
This fact is one reason for the popularity of custom rifle builders who understand the importance of feeding longer than SAAMI length rounds and building rifles with long enough actions and magazines to cycle the rounds. The first commercial rifle manufacturers who figure this out and start building rifles capable of feeding longer rounds will lead the way into modern times. There have been many improvements to several key components of modern rifle ammunition, specifically bullets and powder. It�s unfortunate that many rifle makers continue to adhere to the antiquated SAAMI limitations that were put in place so long ago when components were so different, standards which limit the performance of modern potential."
http://www.bergerbullets.com/effect...and-cartridge-base-to-ogive-cbto-part-1/
