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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
585 HE -- Barrels of Cases --
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<blockquote data-quote="hubel458" data-source="post: 1000893" data-attributes="member: 6474"><p>Our 585 caliber is modern bolt action continuance of the 577 Nitro</p><p>Express rimmed case, that many big game hunters like. Usually</p><p>set up in double rifles. It has an interesting history, from the old 24ga</p><p>size to 577NE, to the 585 Nyati with the picture of Ross Seyfreid</p><p>shooting one in a Ruger #1 under recoil knocking his shooting glasses</p><p>off, to the Trex of internet fame knocking guys over,</p><p> to our 585HE the strongest yet.</p><p></p><p>The 577NE is an offshoot of the 24 gauge caliber, only they went</p><p>eventially to brass cases. Back in the 1860-70s, starting first with short </p><p>cases and black powder, cases built like shotgun cases, called the </p><p>577 Snider, then going to coiled brass cases, still with black powder, </p><p>then on to drawn brass cases, called 577 BP Express. then to 3"</p><p>and other longer cases with smokeless. The Snider started out with a bullet</p><p>of .570" diameter and through the progression to the 577NE bullet</p><p>diameter ended up at .585". This general bore diameter of cartridge guns</p><p>and muzzle loaders, it is really interesting on how they developed</p><p>and were used by military and then hunters over the years. The Snider </p><p>was necked down to make the 577-450 , a military round used all</p><p>over the British Empire, by the tens of millions.</p><p></p><p>Bases of both 24ga and 577NE are about the same. Now we have made a</p><p>24ga FH, a slight regression to earlier times, by taking 577NE brass, and</p><p>reducing rim diameter to 24ga specs. Two minute job. And</p><p>stamp the caseheads 24 ga. </p><p></p><p>For shotgun upgrading in power and range, It is all about increasing </p><p>the power in easy to find brass cases, stronger actions, and finding</p><p>reasonable price rifled barrels. Same barrels we found for 585, work for 24ga.</p><p>The 577NE brass we make 24ga drawn cases from, for example are </p><p>about a third the cost of 600NE brass, or getting turned 24ga cases made.</p><p>We could use 24ga thin cases but they are a pain, expand way too much,</p><p>with slug loads which makes resizing without crumpling cases a problem.</p><p></p><p>Info about the power in types of guns normally set up with 24ga FH,</p><p>break actions, bolt shotguns,etc. In thin brass 24ga case, 440gr slug </p><p>goes 1500, with about 2000 ft lbs, that's in a 2.5" Magtech brass case.</p><p>Now using the better, heavier 3" brass we got, we can increase speed</p><p>to 1750 fps increasing energy 50%, going to 2000 fps about doubles </p><p>energy. And going to 2300 which good brass holds ok, in heavy barrel</p><p>gun, gets us near 2 1/2 times the energy. About 37-40,000 psi which the</p><p>actions hold in this smaller diameter case, compared to 12 gauge size.</p><p>So makes relatively smaller bore shotgun, 24ga, with 458WIN power.</p><p>.Perfect with Minie bullets. Perfect for deer and hogs, bear, etc.</p><p></p><p>Great for slug hunting in shotgun only areas. We mark barrels 24ga</p><p>and cases 24. A decent case that is complimentary to our 585HE....Ed</p></blockquote><p></p>
[QUOTE="hubel458, post: 1000893, member: 6474"] Our 585 caliber is modern bolt action continuance of the 577 Nitro Express rimmed case, that many big game hunters like. Usually set up in double rifles. It has an interesting history, from the old 24ga size to 577NE, to the 585 Nyati with the picture of Ross Seyfreid shooting one in a Ruger #1 under recoil knocking his shooting glasses off, to the Trex of internet fame knocking guys over, to our 585HE the strongest yet. The 577NE is an offshoot of the 24 gauge caliber, only they went eventially to brass cases. Back in the 1860-70s, starting first with short cases and black powder, cases built like shotgun cases, called the 577 Snider, then going to coiled brass cases, still with black powder, then on to drawn brass cases, called 577 BP Express. then to 3" and other longer cases with smokeless. The Snider started out with a bullet of .570" diameter and through the progression to the 577NE bullet diameter ended up at .585". This general bore diameter of cartridge guns and muzzle loaders, it is really interesting on how they developed and were used by military and then hunters over the years. The Snider was necked down to make the 577-450 , a military round used all over the British Empire, by the tens of millions. Bases of both 24ga and 577NE are about the same. Now we have made a 24ga FH, a slight regression to earlier times, by taking 577NE brass, and reducing rim diameter to 24ga specs. Two minute job. And stamp the caseheads 24 ga. For shotgun upgrading in power and range, It is all about increasing the power in easy to find brass cases, stronger actions, and finding reasonable price rifled barrels. Same barrels we found for 585, work for 24ga. The 577NE brass we make 24ga drawn cases from, for example are about a third the cost of 600NE brass, or getting turned 24ga cases made. We could use 24ga thin cases but they are a pain, expand way too much, with slug loads which makes resizing without crumpling cases a problem. Info about the power in types of guns normally set up with 24ga FH, break actions, bolt shotguns,etc. In thin brass 24ga case, 440gr slug goes 1500, with about 2000 ft lbs, that's in a 2.5" Magtech brass case. Now using the better, heavier 3" brass we got, we can increase speed to 1750 fps increasing energy 50%, going to 2000 fps about doubles energy. And going to 2300 which good brass holds ok, in heavy barrel gun, gets us near 2 1/2 times the energy. About 37-40,000 psi which the actions hold in this smaller diameter case, compared to 12 gauge size. So makes relatively smaller bore shotgun, 24ga, with 458WIN power. .Perfect with Minie bullets. Perfect for deer and hogs, bear, etc. Great for slug hunting in shotgun only areas. We mark barrels 24ga and cases 24. A decent case that is complimentary to our 585HE....Ed [/QUOTE]
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