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Rifles, Reloading, Optics, Equipment
Reloading
22-250 AI ELDM 88gr
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<blockquote data-quote="fmuguira" data-source="post: 2050328" data-attributes="member: 27974"><p>Know this is old but twist and groove are typically the culprits for blowing up long for caliber bullets. ( also long barrels have an effect too)</p><p></p><p>Basically over rpm, heat and bite on the jacket ( from groove depth) can destroy them. We shoot 88 Eldms in 26" 22-250 AI barrels at 3200-3250 fps with 8 twist 3 groove barrels and most survive. Friend has a 30" 8 twist 3 groove that's 30" barrel bench gun and it loses 1/2 the bullets shot. They re running 3350 FPS. </p><p></p><p>When Hornady recommends a 7 twist for that bullet they re trying to cover 223, 22 BR and up cases. The big volume 22 s can use an 8 twist if your elevation, etc all aligns up. Regardless you re walking a fine line when you get in this arena!</p></blockquote><p></p>
[QUOTE="fmuguira, post: 2050328, member: 27974"] Know this is old but twist and groove are typically the culprits for blowing up long for caliber bullets. ( also long barrels have an effect too) Basically over rpm, heat and bite on the jacket ( from groove depth) can destroy them. We shoot 88 Eldms in 26” 22-250 AI barrels at 3200-3250 fps with 8 twist 3 groove barrels and most survive. Friend has a 30” 8 twist 3 groove that’s 30” barrel bench gun and it loses 1/2 the bullets shot. They re running 3350 FPS. When Hornady recommends a 7 twist for that bullet they re trying to cover 223, 22 BR and up cases. The big volume 22 s can use an 8 twist if your elevation, etc all aligns up. Regardless you re walking a fine line when you get in this arena! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
22-250 AI ELDM 88gr
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