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Post by boolitdesigner on Nov 2, 2017 14:56:00 GMT -5
When you guys gave me the parameters for the 257 JR, it was for the SS cylinder. The crimp groove was placed for a full length case with the meplat very close to the cylinder end with the base of the bullet at the base of the cartridge neck. I made it as long and heavy as it would go according to my design regimen. Typical “without flaw” stuff. Kinda boring after awhile...HAHAHA Anybody wanna bet I could load it BACKWARDS and make it shoot? Try it, you might like it for short range.Only one little 32 detail Bob, we are missing the 640 design between the 115 and the 135 grainers. What sayeth ye oh cast slug wizard? We're missing the 85 gr. also. A weight/length to fit the Single Seven 327's would be good. Somebody will have to give me the cylinder length and approximate weight you want. And, if you wuz to be so bold as to update some of these ancient .257 designs, say something in the 70-80 grain range what might you suggest? A shortened Lyman 257312 as it is the most accurate 25 cast out there. At this point, from my experience, I’m wondering if a crimp groove in the smaller bores has any value. Yes, it does........... for some not so obvious reasons.
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Post by cherokeetracker on Nov 2, 2017 19:53:21 GMT -5
Typical “without flaw” stuff. Kinda boring after awhile...HAHAHA Anybody wanna bet I could load it BACKWARDS and make it shoot? Try it, you might like it for short range.Only one little 32 detail Bob, we are missing the 640 design between the 115 and the 135 grainers. What sayeth ye oh cast slug wizard? We're missing the 85 gr. also. A weight/length to fit the Single Seven 327's would be good. Somebody will have to give me the cylinder length and approximate weight you want. And, if you wuz to be so bold as to update some of these ancient .257 designs, say something in the 70-80 grain range what might you suggest? A shortened Lyman 257312 as it is the most accurate 25 cast out there. At this point, from my experience, I’m wondering if a crimp groove in the smaller bores has any value. Yes, it does........... for some not so obvious reasons. Concerning the Lyman 257312:
When shortening how short do you suggest? and would you hollow point it? Or, Just leave it a solid? If I remember correct it is supposed to drop around 90 Grs. What seems to be optimum for length? Or does that completely depend upon what intended usage may be?
Charles
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Post by boolitdesigner on Nov 2, 2017 20:10:13 GMT -5
Concerning the Lyman 257312:
When shortening how short do you suggest? That depends on exactly what I want to fit it to, specifically the 25-20 and some others. I design on the basis of dynamic fit... not static fit. I balance out the bearing length and lube capacity among other factors. and would you hollow point it? I very seldom make solids exclusively (hollow base molds being an exception) as most things I do are for minimal calibers to increase their effectiveness. Or, Just leave it a solid? If I remember correct it is supposed to drop around 90 Grs. It's about that and a little too long for the 25-20's powder capacity. What seems to be optimum for length? Or does that completely depend upon what intended usage may be? Both... it really depends on balancing out a bullet of specific length and weight to be accurate and fly right. There are several 25 calibers suitable for a shorter 257312.
Charles
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Post by cherokeetracker on Nov 2, 2017 20:15:50 GMT -5
I would really like this to be designed and tested. I am sure that you can come up with a winner.
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Post by Encore64 on Nov 5, 2017 5:47:55 GMT -5
I'd love to see an available cast bullet for the 25s in the 70-72 grain range
Right now, its 55 or 85 grn. Take your pick.
Both are excellent bullets, but a midrange weight would add much versatility.
Just bought my first cast/coated 25s from Missouri BBullets. Will try them as soon as time allows.
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Post by 2 Dogs on Nov 5, 2017 7:12:41 GMT -5
I'd love to see an available cast bullet for the 25s in the 70-72 grain range Right now, its 55 or 85 grn. Take your pick. Both are excellent bullets, but a midrange weight would add much versatility. Just bought my first cast/coated 25s from Missouri BBullets. Will try them as soon as time allows. I’m thinking we could make 1500 fps or better with a 70 grain cast bullet out of a sixgun if we had enough cylinder to seat it out of the case a bit. With a rechambered Single Six cylinder a 70 grain bullet base would be below the neck and reduce case capacity a bit. This reduction in case capacity might actually be helpful with powder position issues and lead to an increase in efficiency. We just have to see.
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Post by boolitdesigner on Nov 6, 2017 18:23:08 GMT -5
I'm on imgur trying to post a jpeg........... and it ain't workin'
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Post by 2 Dogs on Nov 6, 2017 20:59:21 GMT -5
I'm on imgur trying to post a jpeg........... and it ain't workin'
Bob, I will give you a call tomorrow evening and see if we can hammer it out. Unless you want to email it to me. fcgarza0640 AT gmail DOT com
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Post by dougader on Nov 7, 2017 0:25:30 GMT -5
I'm on imgur trying to post a jpeg........... and it ain't workin'
you can email me the pic and I'll post it in the a.m. dougader at hotmail dot com
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Post by boolitdesigner on Nov 9, 2017 13:43:43 GMT -5
OK folks, this is an example of what a .25 Cal. 73 gr. solid looks like...... it would be about 70 gr. with the large HP. Comments?
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Post by blacktailslayer on Nov 9, 2017 15:24:58 GMT -5
I like it.
Don D.
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Post by 2 Dogs on Nov 9, 2017 16:24:16 GMT -5
I want one....
My prognosticator is tellin’ me my Jackrabbit with it’s longer cylinder would slang this un’ at 1600 fps or bester...
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Post by boolitdesigner on Nov 9, 2017 18:03:32 GMT -5
This drawing shows the maximum bullet length and the neck length for the cartridge from the crimp groove. Think of it like this: The bullet shown is seated in any of those cartridges listed where the crimp groove is at the top of the neck. The other lines with cartridge designations show where the base of the bullet is in relation to the base of the neck (right of the crimp groove) and on the left of the crimp groove it shows the spec length where the maximum distance you can seat a bullet out of the cartridge from the crimp groove.
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Post by cherokeetracker on Nov 10, 2017 19:46:20 GMT -5
I want one.... My prognosticator is tellin’ me my Jackrabbit with it’s longer cylinder would slang this un’ at 1600 fps or bester... I am thinking about the same thing. and I am not your prognosticator..... Hahaaa I am thinking H110, AA1680, 4227 for starters..
I don't fully understand the second PIC unless Bob is showing the differences in cartridge length with this design.
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Post by cherokeetracker on Nov 10, 2017 20:15:37 GMT -5
It took only 12 pages of this thread to shut me up or actually give me what I was wanting. Yep on page 8 I was saying,,,, Finally.
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