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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Edge+P vs 338 Terminator vs 338 Norma+P
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<blockquote data-quote="MagnumManiac" data-source="post: 2854388" data-attributes="member: 10755"><p>I had a 338 Edge, using the +P chamber, it was accurate, but not fast enough for me even with a 30" barrel.</p><p>I built my own rifle and designed my own cartridge using a 4" mag (modified) using a CZ550 Safari Magnum action. 2 cartridges were initially designed and reamers made, 338-416 Rigby Improved 45° with .010" taper per inch and a neck .050" longer than calibre. The other was a 375-416 Rigby Improved 40° with .010" taper per inch and neck .050" longer than calibre. The 338 has a 30" 1:9" twist, the 375 has a 30" 1:10" twist.</p><p>Also designed a 30 with the same principles above using a 1:9" twist and 40° shoulder, however the neck was kept to .025" longer than calibre, never made the reamer because suitable bullets weren't available to match my ELR requirements at 2,000 metres.</p><p>Since then, the 33 and 37 XC cartridges have come about, I would research those, and the rifles they are built on and seriously look at them, proven shooters.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2854388, member: 10755"] I had a 338 Edge, using the +P chamber, it was accurate, but not fast enough for me even with a 30” barrel. I built my own rifle and designed my own cartridge using a 4” mag (modified) using a CZ550 Safari Magnum action. 2 cartridges were initially designed and reamers made, 338-416 Rigby Improved 45° with .010” taper per inch and a neck .050” longer than calibre. The other was a 375-416 Rigby Improved 40° with .010” taper per inch and neck .050” longer than calibre. The 338 has a 30” 1:9” twist, the 375 has a 30” 1:10” twist. Also designed a 30 with the same principles above using a 1:9” twist and 40° shoulder, however the neck was kept to .025” longer than calibre, never made the reamer because suitable bullets weren’t available to match my ELR requirements at 2,000 metres. Since then, the 33 and 37 XC cartridges have come about, I would research those, and the rifles they are built on and seriously look at them, proven shooters. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Edge+P vs 338 Terminator vs 338 Norma+P
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