That,and it gives the bullet a runnin' head start at the rifling(Technical Term). So you can load to higher pressures,without getting kilt(Technical Term).
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<br>Proponents dig the speed(and I personally think the throat lasts longer). Opponents cite accuracy issues.
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<br>I've had 'em throated most every which way. A Rem 700 based Custom Rifle,wearing a 257WBY SAAMI chamber/throat,is my favorite chambering on the Planet.
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<br>She's fast AND accurate......................
