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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Target/ELR 375 HE..
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<blockquote data-quote="hubel458" data-source="post: 1310227" data-attributes="member: 6474"><p>Yes folks can use shellholder action, but many don't like them</p><p>and some fat bolt ones are only few hundred more in singleshot.</p><p>I recommend single shot for ELR</p><p></p><p> Shellholders are strong but for some seem inconvenient </p><p>when shooting prone with a time limit, and actions costing few</p><p>hundred more just as good as ones costing 3-5 grand....</p><p></p><p>As for not having cases formed with real sharp shoulder angle</p><p>the chamber is test chamber for forming now and we made it with</p><p>various tools, reamers, etc, Don,t have CNC,When wildcattng process</p><p>and case results are what we want down to exact specs then</p><p>we will get exact reamer done, and reamer guys will make for all doing this.</p><p>We may leave the shoulder corner with WEA rounded effect if </p><p>reamer guys can do it easy...will help gas and heat flow,</p><p></p><p>For right now we will wildcat cases from BMG brass. I know our case is</p><p>a superior design, look at the shape of the powder space between the two,</p><p>in picture. I been doing this for many years, and it works great..</p><p></p><p>Powder space proportions and shape are what counts, space inside ours starts </p><p>parallel sided,with total .030" taper, long case,as long as possible to make</p><p>it, should be longer, and shallower neck than sharp shouldered cases.</p><p>I design from the inside of the case as much as possible..........................</p><p></p><p> Others take bmg case, blow it out, give real steep shoulders, shorten, but inside </p><p>of case angles out, then steep shoulder so they get their sought after</p><p> cleaner burn inside the case nonsense., but doing that more of powders</p><p> energy is lost to heat and friction, like 2.5%.....probably more..</p><p></p><p>Ain't much, but if comparing cases with 280gr powder that is 6.5gr </p><p>of energy extra that could be pushing bullet. ...6.5gr powder is 1200 ft lbs </p><p>of potential energy, which with 500 gr 416 bullet gives extra 150 fps...</p><p></p><p>First thing, we want max speed at regular high pressure, not having to go</p><p> to ultra high 80k psi pressures..I used same idea with the belted straight,</p><p>700HE and it outran any blown out, necked down 700 anyone ever did ,</p><p>with cases never wearing out. Same for my 585 derived cases..Ed.</p></blockquote><p></p>
[QUOTE="hubel458, post: 1310227, member: 6474"] Yes folks can use shellholder action, but many don't like them and some fat bolt ones are only few hundred more in singleshot. I recommend single shot for ELR Shellholders are strong but for some seem inconvenient when shooting prone with a time limit, and actions costing few hundred more just as good as ones costing 3-5 grand.... As for not having cases formed with real sharp shoulder angle the chamber is test chamber for forming now and we made it with various tools, reamers, etc, Don,t have CNC,When wildcattng process and case results are what we want down to exact specs then we will get exact reamer done, and reamer guys will make for all doing this. We may leave the shoulder corner with WEA rounded effect if reamer guys can do it easy...will help gas and heat flow, For right now we will wildcat cases from BMG brass. I know our case is a superior design, look at the shape of the powder space between the two, in picture. I been doing this for many years, and it works great.. Powder space proportions and shape are what counts, space inside ours starts parallel sided,with total .030" taper, long case,as long as possible to make it, should be longer, and shallower neck than sharp shouldered cases. I design from the inside of the case as much as possible.......................... Others take bmg case, blow it out, give real steep shoulders, shorten, but inside of case angles out, then steep shoulder so they get their sought after cleaner burn inside the case nonsense., but doing that more of powders energy is lost to heat and friction, like 2.5%.....probably more.. Ain't much, but if comparing cases with 280gr powder that is 6.5gr of energy extra that could be pushing bullet. ...6.5gr powder is 1200 ft lbs of potential energy, which with 500 gr 416 bullet gives extra 150 fps... First thing, we want max speed at regular high pressure, not having to go to ultra high 80k psi pressures..I used same idea with the belted straight, 700HE and it outran any blown out, necked down 700 anyone ever did , with cases never wearing out. Same for my 585 derived cases..Ed. [/QUOTE]
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