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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Nosler Accubond Long Range problem
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<blockquote data-quote="Engineering101" data-source="post: 846498" data-attributes="member: 63138"><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">Bigngreen – you are of course dead right not to trust the website. That same wesite lists the diameter of the barrel shank incorrectly so they sure could have the twist wrong. However, the twist measures to be 1 in 10.5 inches and I figure I'm getting about 0.5 inches worth of slippage on the dry patch I used so it probably is a 1 in 10 since a 1 in 10.5 would be non standard. And there is also the fact that whatever the twist is, it does not exhibit even marginal stability when shooting the 150 gr ABLRs.</span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">By the way, bullets that are unstable and are putting oblong holes in the paper can still group surprisingly good. I've done it with the Barnes 7mm 168 gr LRXs in a 4 groove Brux with a 1 in 9 twist. I had to run those up at 3,080 fps to get round holes down here at sea level but they still grouped better than MOA going much slower when the holes were oblong. And oh by the way Barnes prints 1 in 9 on the box but tells you separately that 1 in 9 is only good above 5,000 feet!</span></span></p></blockquote><p></p>
[QUOTE="Engineering101, post: 846498, member: 63138"] [FONT=Verdana][SIZE=2]Bigngreen – you are of course dead right not to trust the website. That same wesite lists the diameter of the barrel shank incorrectly so they sure could have the twist wrong. However, the twist measures to be 1 in 10.5 inches and I figure I’m getting about 0.5 inches worth of slippage on the dry patch I used so it probably is a 1 in 10 since a 1 in 10.5 would be non standard. And there is also the fact that whatever the twist is, it does not exhibit even marginal stability when shooting the 150 gr ABLRs.[/SIZE][/FONT] [FONT=Verdana][SIZE=2] [/SIZE][/FONT] [FONT=Verdana][SIZE=2]By the way, bullets that are unstable and are putting oblong holes in the paper can still group surprisingly good. I’ve done it with the Barnes 7mm 168 gr LRXs in a 4 groove Brux with a 1 in 9 twist. I had to run those up at 3,080 fps to get round holes down here at sea level but they still grouped better than MOA going much slower when the holes were oblong. And oh by the way Barnes prints 1 in 9 on the box but tells you separately that 1 in 9 is only good above 5,000 feet![/SIZE][/FONT] [SIZE=2][/SIZE] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Nosler Accubond Long Range problem
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