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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger .277 EOL Extreme Heavy Hybrid 170 Grain.
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<blockquote data-quote="royinidaho" data-source="post: 733294" data-attributes="member: 2011"><p>The 270 Allen Mag is based on the 7mm/300 RUM case. Case width is wider, length it increased and shoulder angle steeper. I shoot anywhere from 93 to 100 grains of US 869 (a pretty poor powder, BTW) behind the 169.5 Original Wildcat. MV is on the order of 3440 FPS.</p><p></p><p>Original barrel was Lilja 3 groove 8 twist - 30 Inches. Replacement barrel, after 900 or so rounds is Lilja 3 groove 8 twist - 28 inches. This barrel is a bit faster than the original. Same velocities w/a grain or two less powder.</p><p></p><p>The 277 Allen Mag is based on the 338 Lapua parent case with the standard AM design applied. The advantage with this one is the Lapua brass as Remmy brass is marginal at best.</p><p></p><p>I'm seriously considering some of Shawn's 338 Edge match brass and not look back.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 733294, member: 2011"] The 270 Allen Mag is based on the 7mm/300 RUM case. Case width is wider, length it increased and shoulder angle steeper. I shoot anywhere from 93 to 100 grains of US 869 (a pretty poor powder, BTW) behind the 169.5 Original Wildcat. MV is on the order of 3440 FPS. Original barrel was Lilja 3 groove 8 twist - 30 Inches. Replacement barrel, after 900 or so rounds is Lilja 3 groove 8 twist - 28 inches. This barrel is a bit faster than the original. Same velocities w/a grain or two less powder. The 277 Allen Mag is based on the 338 Lapua parent case with the standard AM design applied. The advantage with this one is the Lapua brass as Remmy brass is marginal at best. I'm seriously considering some of Shawn's 338 Edge match brass and not look back. [/QUOTE]
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Berger .277 EOL Extreme Heavy Hybrid 170 Grain.
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