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Post by jjsharpshooter on Nov 30, 2017 8:56:44 GMT -5
I had posted in a separate topic about wanting/needing a 640 style .500 bullet. It would be best if it would work in the 500 S&W Magnum, 500 JRH, 500 WE, and the 500 Special. I would be looking for a target weight of 420 gr with the largest hp pin. I measured my S&W 500 cylinder, it's 2.300 and the case rims are not recessed into it. Specs show a max case length of 1.625". Now we need the specs of the other 50 cal guns to get things rolling. What do you guys think?
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Post by sathington on Nov 30, 2017 13:59:28 GMT -5
I have a few question for BobK.
1) I notice that all your designs and most the writings that people do about them focus on the hollow points. I'm curious how they perform without being hollow pointed and if they were designed with that in mind.
2) What is it that makes these bullets so accurate? Of course, I wouldn't ask you to divulge your trade secrets, I'm just curious as to what factors are being considered in your bullet designs. To my untrained eyes, I can see how your design differs from a SWC or a WFN, but I'm curious as to how those differences translate to accuracy?
I'm more of a lurker than a poster here, but I'm very grateful that you are a member of this forum. There's such a vast wealth of information on this forum that I don't think I could get anywhere else. It's hard to find like minded people in Seattle.
Thanks,
Nate
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Post by boolitdesigner on Nov 30, 2017 17:35:49 GMT -5
I had posted in a separate topic about wanting/needing a 640 style .500 bullet. It would be best if it would work in the 500 S&W Magnum, 500 JRH, 500 WE, and the 500 Special. I would be looking for a target weight of 420 gr with the largest hp pin. I measured my S&W 500 cylinder, it's 2.300 and the case rims are not recessed into it. Specs show a max case length of 1.625". Now we need the specs of the other 50 cal guns to get things rolling. What do you guys think?I think we need the specs from other guys who have these calibers and specific cylinder lengths from those folks who chamber these in their products. I'm sure several people here have these............... |
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Post by boolitdesigner on Nov 30, 2017 18:36:32 GMT -5
I have a few question for BobK. 1) I notice that all your designs and most the writings that people do about them focus on the hollow points. That's is because most are for the minimal power calibers that don't have enough power at factory load levels to kill well. There are two facets working in the handgun world: one is the folks who want a heavy large meplat bullet for the cartridge and two, those who want a light to heavy hollow point driven faster. I'm curious how they perform without being hollow pointed and if they were designed with that in mind. You can't please everyone at once, so most all of those bullets have a 60& to 75% meplat for the solid shooters. The hollow points are individually crafted for the power levels of cartridges in the calibers used.2) What is it that makes these bullets so accurate? A combination of things..... most of which have been ignored by people. I design a bullet that works dynamically when it's started in flight. Most people don't do that. Of course, I wouldn't ask you to divulge your trade secrets, I'm just curious as to what factors are being considered in your bullet designs. How a bullet enters the barrel mostly for the accuracy end and bullet shape/balance. To my untrained eyes, I can see how your design differs from a SWC or a WFN, but I'm curious as to how those differences translate to accuracy? There are too many copiers around to go further with that. They would love to know, but they never will.I'm more of a lurker than a poster here, but I'm very grateful that you are a member of this forum. There's such a vast wealth of information on this forum that I don't think I could get anywhere else. It's hard to find like minded people in Seattle. No difference anywhere you go.Thanks, Nate |
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Post by sathington on Nov 30, 2017 19:54:38 GMT -5
Thanks for the answers, Bob, I appreciate it. Very informative.
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Post by jjsharpshooter on Dec 5, 2017 19:49:03 GMT -5
Now we need the specs of the other 50 cal guns to get things rolling. What do you guys think?[/font][/quote]I think we need the specs from other guys who have these calibers and specific cylinder lengths from those folks who chamber these in their products. I'm sure several people here have these...............
[/quote]
No interest in a 50 cal 640 style i guess, I have a 500 JRH BFR on order and should have it by next week, will get it's specs posted when I get it.
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Paden
.375 Atomic
Lower Goldstream Creek
Posts: 1,132
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Post by Paden on Dec 7, 2017 21:06:39 GMT -5
No interest in a 50 cal 640 style i guess... What does a 640 style bullet look like? |
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Post by jjsharpshooter on Dec 7, 2017 21:51:14 GMT -5
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Post by jjsharpshooter on Dec 7, 2017 21:52:14 GMT -5
No interest in a 50 cal 640 style i guess... What does a 640 style bullet look like? If I can get pics to work I'll post a pic. |
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Post by jjsharpshooter on Dec 13, 2017 23:26:54 GMT -5
No interest in a 50 cal 640 style i guess... What does a 640 style bullet look like? MP 477-640 .475 400 gr cast with large hp pin  |
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Paden
.375 Atomic
Lower Goldstream Creek
Posts: 1,132
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Post by Paden on Dec 13, 2017 23:33:27 GMT -5
What does a 640 style bullet look like? MP 477-640 .475 400 gr cast with large hp pin Thanks |
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Post by jjsharpshooter on Dec 14, 2017 0:03:59 GMT -5
I had posted in a separate topic about wanting/needing a 640 style .500 bullet. It would be best if it would work in the 500 S&W Magnum, 500 JRH, 500 WE, and the 500 Special. I would be looking for a target weight of 420 gr with the largest hp pin. I measured my S&W 500 cylinder, it's 2.300 and the case rims are not recessed into it. Specs show a max case length of 1.625". Now we need the specs of the other 50 cal guns to get things rolling. What do you guys think?I think we need the specs from other guys who have these calibers and specific cylinder lengths from those folks who chamber these in their products. I'm sure several people here have these............... Ok Bob, I got a BFR in .500 JRH. The cylinder measures 1.848" with recessed case heads. I don't have JRH brass but have Starline .500 Special brass. It measures 1.275" and bullets seem like they can be seated .450" into the case before the case walls start to thicken.I believe JRH brass is 1.400" long. |
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Post by Rimfire69 on Dec 14, 2017 7:40:16 GMT -5
My BFR JRH is 1.850", roughly the same as yours.
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Post by boolitdesigner on Dec 14, 2017 10:12:58 GMT -5
What are the cylinders throat dimensions. With recessed case heads, please insert cases and give me a distance from the case head to the front of the cylinder.
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Post by jjsharpshooter on Dec 14, 2017 10:32:56 GMT -5
What are the cylinders throat dimensions. With recessed case heads, please insert cases and give me a distance from the case head to the front of the cylinder. On my BFR with .500 Special brass, it measures 1.858" from case head to the front of cylinder. On my S&W 500 Magnum it measures 2.355" from case head to front of cylinder. I dont think I have a way to measure throat dimensions. |
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