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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Good long range varmint caliber?
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<blockquote data-quote="Trickymissfit" data-source="post: 829683" data-attributes="member: 25383"><p>well your kinda limiting this to .224 and smaller bullets. The baddest .224 on the planet is the .224 Vias, and unless your shooting 70+ grain bullets it's kind of a waste. But it will push a 70 grain bullet faster than the Swift can push a 50 grain bullet! It'll also push a 70 grain 6mm bullet faster than the 50 grain bullet in a Swift! Kenny Jarrette's .220 Jaybird maybe the best with it's case design, but once again you'd be better off using 75+ grain bullets in it. But it has everything going for it (.300" neck length with a 35 degree shoulder). Form cases from .243 brass, and there's actually a smaller amount of case shrinkage than with a lot of other .224 caliber improved cases. It's roughly 400 fps faster than the same bullet out of a Swift, and that's about a hundred feet per second faster than a 22-250 improved. Plus the case design is better.</p><p> </p><p>Personally I like the 6mm Ackley for long distance stuff, but the 6.5 Ackley is a really good design with an excellent barrel life (so is the 6mmAI). The 6mm Ackley probably does best with 90 grain and heavier bullets, and the 6.5 shoots the 140 grain bullet extremely will. Nothing buy a .257AI necked upto 6.5mm. Dave Kiff has several different reamer prints for this one, and it's starting to show up in F class shooting so I've been told. It'll push a 140 grain bullet to about 2970 fps (kinda hot), and that's serious!</p><p> </p><p>The generic 22-250 from Savage can be ordered in a 1:9 twist barrel, now that's one to think about. But I'd be looking at a custom barrel in 6.5 if it were me. Another one to seriously think about id the 6mm/.250 Ackley improved round with a 1:8 twist barrel. It will push a 105 grain Amax to just slightly under 3000 fps without any pressure problems. The case is small enough that you really don't need a 26" barrel, and could get by with a 24" one with no problems. In other words better harmonics. Same could be said with the Jaybird as well.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 829683, member: 25383"] well your kinda limiting this to .224 and smaller bullets. The baddest .224 on the planet is the .224 Vias, and unless your shooting 70+ grain bullets it's kind of a waste. But it will push a 70 grain bullet faster than the Swift can push a 50 grain bullet! It'll also push a 70 grain 6mm bullet faster than the 50 grain bullet in a Swift! Kenny Jarrette's .220 Jaybird maybe the best with it's case design, but once again you'd be better off using 75+ grain bullets in it. But it has everything going for it (.300" neck length with a 35 degree shoulder). Form cases from .243 brass, and there's actually a smaller amount of case shrinkage than with a lot of other .224 caliber improved cases. It's roughly 400 fps faster than the same bullet out of a Swift, and that's about a hundred feet per second faster than a 22-250 improved. Plus the case design is better. Personally I like the 6mm Ackley for long distance stuff, but the 6.5 Ackley is a really good design with an excellent barrel life (so is the 6mmAI). The 6mm Ackley probably does best with 90 grain and heavier bullets, and the 6.5 shoots the 140 grain bullet extremely will. Nothing buy a .257AI necked upto 6.5mm. Dave Kiff has several different reamer prints for this one, and it's starting to show up in F class shooting so I've been told. It'll push a 140 grain bullet to about 2970 fps (kinda hot), and that's serious! The generic 22-250 from Savage can be ordered in a 1:9 twist barrel, now that's one to think about. But I'd be looking at a custom barrel in 6.5 if it were me. Another one to seriously think about id the 6mm/.250 Ackley improved round with a 1:8 twist barrel. It will push a 105 grain Amax to just slightly under 3000 fps without any pressure problems. The case is small enough that you really don't need a 26" barrel, and could get by with a 24" one with no problems. In other words better harmonics. Same could be said with the Jaybird as well. gary [/QUOTE]
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Good long range varmint caliber?
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