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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Lapua 167-gr Scenar . . . an anomaly?
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<blockquote data-quote="Mysticplayer" data-source="post: 27428" data-attributes="member: 8947"><p>Houston Boy, try measuring the diameter of these bullets. I bet that the Lapuas are slightly smaller then the rest.</p><p></p><p>I had a 6BR that had a very tight bore. Alot of very accurate bullets wouldn't work at all, but when I found some "smaller" ones, the rifle really shone.</p><p></p><p>Bore friction has a large impact on pressures and if you reduced the bullet diameter just a smidge, the velocity increase would be possible.</p><p></p><p>I believe this is what Lazzeroni has done with his coated Barnes X bullets. They are just a little smaller to allow for higher muzzle vel. He can get away with this because as the rifle manufacturer, he can spec any barrel groove/land dimension he wants. If the same bullets were used in production rifles, they could be a dismal failure if the wrong size bore was used.</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 27428, member: 8947"] Houston Boy, try measuring the diameter of these bullets. I bet that the Lapuas are slightly smaller then the rest. I had a 6BR that had a very tight bore. Alot of very accurate bullets wouldn't work at all, but when I found some "smaller" ones, the rifle really shone. Bore friction has a large impact on pressures and if you reduced the bullet diameter just a smidge, the velocity increase would be possible. I believe this is what Lazzeroni has done with his coated Barnes X bullets. They are just a little smaller to allow for higher muzzle vel. He can get away with this because as the rifle manufacturer, he can spec any barrel groove/land dimension he wants. If the same bullets were used in production rifles, they could be a dismal failure if the wrong size bore was used. Jerry [/QUOTE]
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Lapua 167-gr Scenar . . . an anomaly?
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