I figure the bullet will push into the lands/rifling "x" far before the force overcomes neck tension or crimp. How far is "x"? Will depend from rifle to rifle. Saami spec should be way back from lands and the "x" will be way into the lands. Alllll those thousandths between are for experimentation. Some bullets may like to "jump" to lands, some may like to start in the lands. Then, some may want to be between. Am I missing what you're askin?


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