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Post by lar4570 on Mar 16, 2022 22:57:10 GMT -5
The brass is about .020 thick at 1.37" off of the base, so it looks like it will need to be inside reamed like the 44 AutoMag or similar...
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Post by bigbore5 on Mar 17, 2022 2:00:36 GMT -5
If anyone can solve this, it will be done through the combined experience and skills in this forum. I only use the Linebaugh cartridges for now, but have considered a jrh/we combo before for lighter jacketed bullets.
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Post by Lee Martin on Mar 17, 2022 8:26:54 GMT -5
Our .458 Devastator is built on cut down magnum rifle brass: This approach may work for the .500 Wyoming Express. Perhaps this weekend I'll try running a few. I'll also have to compare the belt's height on the Wyoming Express to the magnum rifle. The process to make .458 Devastators: 1) Cut brass to 1.45" 2) Expand mouth 3) Inside ream neck 4) FL size in the Devastator die 5) Trim to 1.40" 6) Fire form You have to be careful with inside reaming though. A sharp 'ledge' inside the hull is a prime spot for case separation. We've had to use reamers with a bevel ground into the end. This also requires you to ream a bit deeper. -Lee www.singleactions.com"Chasing perfection five shots at a time"
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Post by flyingzebra on Mar 17, 2022 9:38:30 GMT -5
you could turn the rims down and use moon clips No need for moon clips in a single action
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Post by bigbrowndog on Mar 17, 2022 9:46:29 GMT -5
So my thinking it was based on a standard magnum rifle case was correct. I agree that makes the process of making some waaaay less complicated, still a pain in the butt, but much more manageable.
Trapr
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Post by bradshaw on Mar 17, 2022 10:17:10 GMT -5
So my thinking it was based on a standard magnum rifle case was correct. I agree that makes the process of making some waaaay less complicated, still a pain in the butt, but much more manageable. Trapr ***** Having never seen a factory round for the .44 Auto Mag (made in Mexico, so the story went), forming brass from 7.62x51mm NATO on RCBS form dies, proved relatively painless, with excellent reloading life. (The problem was the gun itself, not ammo.) However, as Lee Martin illustrates, a belted mag rifle case may require reaming extra-gentle taper from thin “neck” to thick wall----to accommodate a .50. If this works, and dies are made available, the insanity is over. It then depends on how well brass fits chamber to avoid peening of belt from firing pin fall. David Bradshaw
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Post by magnumwheelman on Mar 17, 2022 11:02:17 GMT -5
I have part of an old box of "loaded" 44 Auto Mag, made from 30-06 cases... I've been carrying them back & forth from the gun shows for 5-6 years... bought them, when I had my AUTOMAG collection ( 2, 3, 4, & 5... I always intended to buy a 44 Auto Mag )
I paid $10.00 back 10 -15 years ago... if anyone had interest...
once you start modifying cases, it's amazing what you can do... I have 4-5 going from 257 Special to 401 Powermag, including my proprietary 10 mm Rimmed cartridge, that take varying degrees of machine work to complete...
guessing a rimless 500 was not interesting to the original parties, as I'm betting they were looking for a stiffer crimp, than they could have gotten headspacing on the case mouth
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Post by Lee Martin on Mar 17, 2022 11:49:27 GMT -5
I just measured a bunch of .500 Wyoming brass, both fired and virgin. The belt diameter runs around 0.540". The portion just in front of the belt averages 0.524". Neck wall thickness is 0.012" give or take. Turning to magnum rifle brass, to which I sampled a lot (Remington, Weatherby, Winchester, etc). The belts are pretty close, but not exact. I don't think the difference would cause headspace issues, but who knows. However, the area in front of the belt runs 0.508" to 0.512". Inside ream for 0.500" bullets and you'll be really thin on neck thickness. Like 0.004" to 0.006" per side. It would hold, but with the way we crimp that round, I suspect they'd split quickly. -Lee www.singleactions.com"Chasing perfection five shots at a time"
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gcf
.30 Stingray
South Texas
Posts: 276
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Post by gcf on Mar 17, 2022 12:12:03 GMT -5
A group brass buy - to overcome the 10,000 piece minimum threshold, is a novel idea. I'm thinking there may be additional manufacturer concerns though. I've been watching Starline's website (for .480 brass availability) for about 10 months now, & have seen very few changes in caliber availability. 475 was recently available so I assumed 480 was. Got 100 starline 475 from graf's a few weeks ago. 67 bucks Nice try, but .480 shows to be out of stock at Graf's. Crazy times... Thanks regardless! PS: Sorry to the OP for the thread drift.
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Fowler
.401 Bobcat
Posts: 3,565
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Post by Fowler on Mar 17, 2022 12:20:17 GMT -5
RCC brass seems to have some available for ordering,…..I just checked. Still no case specs though. Trapr At almost $4.50 per case they probably will keep most of what they have for a long time as well! It would make sending your gun to JRH for a fresh 500JRH cylinder seem pretty cheap...
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Post by bigbrowndog on Mar 17, 2022 14:13:53 GMT -5
Yeah I saw the price, and agree it seemed pricey.
Trapr
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Post by rkcohen on Mar 17, 2022 14:18:21 GMT -5
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Post by bradshaw on Mar 17, 2022 14:40:56 GMT -5
I just measured a bunch of .500 Wyoming brass, both fired and virgin. The belt diameter runs around 0.540". The portion just in front of the belt averages 0.524". Neck wall thickness is 0.012" give or take. Turning to magnum rifle brass, to which I sampled a lot (Remington, Weatherby, Winchester, etc). The belts are pretty close, but not exact. I don't think the difference would cause headspace issues, but who knows. However, the area in front of the belt runs 0.508" to 0.512". Inside ream for 0.500" bullets and you'll be really thin on neck thickness. Like 0.004" to 0.006" per side. It would hold, but with the way we crimp that round, I suspect they'd split quickly. -Lee www.singleactions.com"Chasing perfection five shots at a time" ***** Photo posted by lar4570, backed up wiith Lee providing case measurements, it puts the crimp on trying to make .500 WE brass from permutations of the patent .375 Holland & Holland case. Brass for a high-pressure meatball must be strong, from head & neck. David Bradshaw
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Post by Encore64 on Mar 17, 2022 14:46:27 GMT -5
With .004-.006" thickness per side, I'd have to pass.
If the inside reaming was off the least bit, it would end poorly.
I'm not even sure that a crimp in brass that thin would hold bullets in unfired rounds. It's just asking for trouble.
If this persists, a group effort to ask JRH to do a batch of cylinders sounds like the best option.
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Post by bigbore5 on Mar 17, 2022 15:31:42 GMT -5
Seems like FA didn't think this through very well. Weatherby bass would have made a fine parent cartridge if they really wanted a belt on it.
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