Benchrest shooters all load their ammo with in a few .001`s or in the lands. But they all fire single shot guns so they don`t have to worry if they will feed from the magizine. They are alos useing custom chambered thight neck chambers. I do not load for any gun I own that my oal is not considerable longer than SAMMA spec. As previlously stated if you jam the bullet into the lands the presure will go through the roof. Some guns shoot better this way, but I don`t recomand even trying it with a factory chamber. I like to start about .005 off the lands but with many factory chambers you can`t even get close to that. I then back off .005 at a time but usually find that I get my best accuracy up close, not always though. The Ojive of the different bullets can make the oal of the bullet vary greatly for the same jump. It is definately worth playing around with if your looking for the best possible accuracy from a rifle.
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Catfish
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