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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.20 Cal Berger 55gr, any one using?
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<blockquote data-quote="B23" data-source="post: 1297145" data-attributes="member: 13222"><p>Defensive Edge is building me what they call a 204 Terminator that'll be shooting the 55gr Bergers in. Considering the speed those 55's will be launching at a 1-8tw will be plenty and the barrel is coming from Krieger but the longest they'll do in a .20cal bore diameter is 26 inches.</p><p></p><p>I think that 1-7tw recommendation is because they're assuming most with be shooting the 55's in things like a 204 Ruger and at those speeds you'd need more twist to stabilize them but at 4000+ FPS a 1-8tw puts you well into "stabilized" per Bergers twist rate calculator.</p></blockquote><p></p>
[QUOTE="B23, post: 1297145, member: 13222"] Defensive Edge is building me what they call a 204 Terminator that'll be shooting the 55gr Bergers in. Considering the speed those 55's will be launching at a 1-8tw will be plenty and the barrel is coming from Krieger but the longest they'll do in a .20cal bore diameter is 26 inches. I think that 1-7tw recommendation is because they're assuming most with be shooting the 55's in things like a 204 Ruger and at those speeds you'd need more twist to stabilize them but at 4000+ FPS a 1-8tw puts you well into "stabilized" per Bergers twist rate calculator. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.20 Cal Berger 55gr, any one using?
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