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Posted: 8/28/2009 12:36:43 PM EDT
| Can anyone tell me why a hollow point is more accurate, or why Black Hills uses hollow point bullets for match ammo instead of FMJ? This is a discussion around a table right now with many theories, so I though I would ask the experts!! |
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Why is the hollow point more accurate? More concentric for sure. More quality, better design usually too.
But those really in the know have a better idea of the accuracy question. The bullet whistles to itself as it travels along ( ever blow air across a pop bottle?) Then it notices that the hole in the tip of the bullet is like that black bullseye it is heading for, and thinks 'that's where I ought to be', so that's where it heads! simple! Accurate! LOL |
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Ammo FAQ > Ammo Oracle One of the reasons match bullets are more accurate than FMJ bullets is because the bases of FMJ bullets are open, with exposed lead. This is because the lead core is inserted into the jacket nose-first, leaving the lead exposed at the base. Match bullets are made by inserting the core into the jacket base-first, allowing a uniform bullet base and leaving a hollow point at the nose. |
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Sometimes Der'Experten copy/paste snippets of canned "info" not noticing that their snippet contains useless information or incomplete information.
The Hole Story. A FMJ bullet has an open base, lead exposed, and the base end is literally the end step in the process. A Sierra HPBTMatch bullet has a closed base, no lead exposed, and the base end is the beginning step in the process. Why does this matter? The base of a bullet is far more important to its ACCURATE flight than the nose. A perfect base is an absolute requirement to accurate flight while a perfect nose is "optional" for lack of a better word. Look at a SMK nose. They close up every which way, but the variations don't matter much compared to the base end perfection. Why is the base important? The gas leaving a gun barrel is going way faster than the bullet that just cleared the muzzle. A perfect base exits a perfect crown perfectly. A SMK has a nearly perfect base. As it clears the bore, gas pressure kicks it in the ass uniformily without altering its original direction of flight. An off center, tilted, uneven, ragged, lead dripping here and there FMJ base is not perfect. As it clears the bore, it clears the crown unevenly and then gas pressure kicks it in the ass unevenly making it fly off center. A SMK can be made with a near perfect base. FMJ bullets will never have a perfect base. For accuracy, use a SMK. |
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