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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I don't think my chronograph is wrong
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<blockquote data-quote="jabey9210" data-source="post: 1176606" data-attributes="member: 24943"><p>I don't think that is so odd. I have a 7WSM with a 9 twist 27" Mcgowen barrel and am getting 3100 fps out of 180 Berger VLD's with 64 grains of IMR 7828ssc. I thought my chrono was wrong when developing loads but it's been confirmed with trajectory for several years. I have about 1200 rounds through it and at around 1000 accuracy started to drop a little so I chased the lands and she's back in the money. I doubt it's got more than a few hundred rounds left but it's been a freak of a barrel with wicked speed and great accuracy. I've never tried any other bullets so I wouldn't know what it would produce but your velocities look good to me!!!!</p></blockquote><p></p>
[QUOTE="jabey9210, post: 1176606, member: 24943"] I don't think that is so odd. I have a 7WSM with a 9 twist 27" Mcgowen barrel and am getting 3100 fps out of 180 Berger VLD's with 64 grains of IMR 7828ssc. I thought my chrono was wrong when developing loads but it's been confirmed with trajectory for several years. I have about 1200 rounds through it and at around 1000 accuracy started to drop a little so I chased the lands and she's back in the money. I doubt it's got more than a few hundred rounds left but it's been a freak of a barrel with wicked speed and great accuracy. I've never tried any other bullets so I wouldn't know what it would produce but your velocities look good to me!!!! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I don't think my chronograph is wrong
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