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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
90 grn vlds
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<blockquote data-quote="Wild_Bill" data-source="post: 140323" data-attributes="member: 4785"><p>Hi i did a review on the 90gr Sierra's and got a brand new 6.8 twist barrel and chambered it in 223 it was extreemly accurate and the elevation of a 5 shot group was .320 high at 300 yards and the wind got me so it opened to .865 wide 4 touching and the other 1 out to the left. then i rechambered the barrel to 22-250AI with everything else the same and could not get the 90's to stay togethor i used powder as slow ar H50BMY right to H4350 and every one in between to try and change the engraving pressure. once they go much past 3000fps that is the end of them. i have also tried them in a 30" 8 twist and at 300 yards they also shot very well. i think the upper limit for them is a 22BR. the other thing the 75gr A Max'x blew up in the 6.8 twist barrel when it was a 223.</p><p></p><p>Cheers Bill</p><p>Australia</p></blockquote><p></p>
[QUOTE="Wild_Bill, post: 140323, member: 4785"] Hi i did a review on the 90gr Sierra's and got a brand new 6.8 twist barrel and chambered it in 223 it was extreemly accurate and the elevation of a 5 shot group was .320 high at 300 yards and the wind got me so it opened to .865 wide 4 touching and the other 1 out to the left. then i rechambered the barrel to 22-250AI with everything else the same and could not get the 90's to stay togethor i used powder as slow ar H50BMY right to H4350 and every one in between to try and change the engraving pressure. once they go much past 3000fps that is the end of them. i have also tried them in a 30" 8 twist and at 300 yards they also shot very well. i think the upper limit for them is a 22BR. the other thing the 75gr A Max'x blew up in the 6.8 twist barrel when it was a 223. Cheers Bill Australia [/QUOTE]
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90 grn vlds
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