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Lapua 167-gr Scenar . . . an anomaly?

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Unread 06-17-2003, 09:59 AM
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Re: Lapua 167-gr Scenar . . . an anomaly?

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.

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