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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Wildcat Bullets?
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<blockquote data-quote="Fiftydriver" data-source="post: 36763" data-attributes="member: 10"><p>Brian,</p><p></p><p>I have a fair amount of 22-6mm AI rifles out right now but only one that ahs any real number for roudns through it. </p><p></p><p>This rifle was designed with a standard 1-14" twist for the 55 gr Sierra Blitzking bullets.</p><p></p><p>The load I developed with this bullet was with 55 gr Rl-22 over a CCI-200 primer. This load is punching the 55 gr tipped pill out at 4200 fps out of the 27" barrel and when it left the shop it was shooting an average of .298" ctc for five three shot groups.</p><p></p><p>I recently had the owner bring the rifle back and we range tested it and it averaged .549" for five, 5 shot groups with this same load and the average velocity had dropped to 4135 fps.</p><p></p><p>The throat is warn pretty bad and the origins of the lands are eroded back several thousandths but the rifle still shoots very well. </p><p></p><p>In fact, we loaded up some test loads seating the bullet farther out to get back to the lands and those two groups were in the .3's but velocity was still less at around 4140 fps.</p><p></p><p>Can't replace the worn throat but this is still a screamer of a round and still going strong. </p><p></p><p>The rifle jsut topped 1200 rounds but the owner does take very good care of the bore. I expect him to get around 1500 to 1700 rounds through it before he has it rebarreled again.</p><p></p><p>On average, I would say that this is a 1000 to 1200 round rifle for sub 1/2 moa grouping.</p><p></p><p>Not a high volume varmint round by any means but with the heavy pills, it will last a lifetime of shooting for most shooters.</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 36763, member: 10"] Brian, I have a fair amount of 22-6mm AI rifles out right now but only one that ahs any real number for roudns through it. This rifle was designed with a standard 1-14" twist for the 55 gr Sierra Blitzking bullets. The load I developed with this bullet was with 55 gr Rl-22 over a CCI-200 primer. This load is punching the 55 gr tipped pill out at 4200 fps out of the 27" barrel and when it left the shop it was shooting an average of .298" ctc for five three shot groups. I recently had the owner bring the rifle back and we range tested it and it averaged .549" for five, 5 shot groups with this same load and the average velocity had dropped to 4135 fps. The throat is warn pretty bad and the origins of the lands are eroded back several thousandths but the rifle still shoots very well. In fact, we loaded up some test loads seating the bullet farther out to get back to the lands and those two groups were in the .3's but velocity was still less at around 4140 fps. Can't replace the worn throat but this is still a screamer of a round and still going strong. The rifle jsut topped 1200 rounds but the owner does take very good care of the bore. I expect him to get around 1500 to 1700 rounds through it before he has it rebarreled again. On average, I would say that this is a 1000 to 1200 round rifle for sub 1/2 moa grouping. Not a high volume varmint round by any means but with the heavy pills, it will last a lifetime of shooting for most shooters. Good Shooting!! Kirby Allen(50) [/QUOTE]
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