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Can someone run a Quick load for me. Hodgdon does not list this load and I would like to know the pressure. I understand it is a generality but the information would be a help in developing a load.
.257 Roberts 24" barrel 2.845 OAL 47.0gr H100v 110 Nosler Accubond.
Thank you for your help.
AJD
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Experience is a great thing as long as one survives it.
Generally, there ain't a lot that separates the two however, Barely making it is a whole lot more satisfying than barely not making it.
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QuickLOAD can provide you with a calculated velocity and pressure for a given load, but that doesn't necessarily reflect the actual velocity and pressure being generated in your firearm. You still won't "know the pressure" from just running the numbers.
Many times the predicted velocity of a given load doesn't mesh with reality, which would also mean the predicted pressure necessarily wouldn't either. If you'd already clocked this load over a chronograph QuickLOAD may be able to give a general idea of what pressure this load is generating in your firearm.
If you'd still like the numbers from QuickLOAD, please provide the missing data.
Cartridge: .257 Roberts Bullet: 110 Nosler Accubond Measured bullet length: ? Measured bullet boat-tail diameter*: ? Powder: Hodgdon H100V Charge Weight: 47.0gr Case: Length: ? H20 Capacity (measured to case mouth, no meniscus): ? COAL: 2.845" Bullet touching/jammed into lands at COAL: ? Barrel: Length: 24" Twist Rate*: ?
* Not critical data, but the better the inputs into a computer model, the better the outputs.
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.” ― Patrick Rothfuss, The Wise Man's Fear
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QuickLOAD can provide you with a calculated velocity and pressure for a given load, but that doesn't necessarily reflect the actual velocity and pressure being generated in your firearm. You still won't "know the pressure" from just running the numbers.
Many times the predicted velocity of a given load doesn't mesh with reality, which would also mean the predicted pressure necessarily wouldn't either. If you'd already clocked this load over a chronograph QuickLOAD may be able to give a general idea of what pressure this load is generating in your firearm.
If you'd still like the numbers from QuickLOAD, please provide the missing data.
Cartridge: .257 Roberts Bullet: 110 Nosler Accubond Measured bullet length: 1.202 Measured bullet boat-tail diameter*: .229 Powder: Hodgdon H100V Charge Weight: 47.0gr Case: Length: 2.230 H20 Capacity (measured to case mouth, no meniscus): use standard Remington COAL: 2.845" Bullet touching/jammed into lands at COAL: No Barrel: Length: 22" Twist Rate*: 10
* Not critical data, but the better the inputs into a computer model, the better the outputs. I understand this is theoretical. Thank you Azar! AJD Edited to 2.230 Case Length
Last edited by AJD; 02/20/14.
There is no accounting for taste.
Experience is a great thing as long as one survives it.
Generally, there ain't a lot that separates the two however, Barely making it is a whole lot more satisfying than barely not making it.
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Case: Length: .225 Best I can tell H20 Capacity (measured to case mouth, no meniscus): use standard Remington If you want anything resembling accurate data, I need real-world numbers for both of these. Your case length is way off. Perhaps you meant 2.225"? That would be a reasonable case length for the 257 Roberts. And while QuickLOAD does have a default case capacity (not a default Remington case capacity, just a general default) this is one of the more important measurements to get good results (perhaps the most important).
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.” ― Patrick Rothfuss, The Wise Man's Fear
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But to give you an idea, with a case length of 2.225" and a default case capacity of 56.0gr of H20 QuickLOAD predicts 3,136 fps @ 70,037 PSI.
With a +-5% variation in powder burn rate: -5% 3,065 fps @ 62,906 PSI +5% 3,193 fps @ 77,205 PSI
In any case, QuickLOAD believes your load to be overpressure.
Comparing to Hodgdon data, they show a max load for 115gr Partition at 46.0gr of H100V producing 3,049 fps @ 46,600 CUP. I'm not sure QuickLOAD is giving you very reliable data here...
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.” ― Patrick Rothfuss, The Wise Man's Fear
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Thanks I believe that to be correct as to QuickLoad providing reliable data in this instance.
Thank you, AJD
There is no accounting for taste.
Experience is a great thing as long as one survives it.
Generally, there ain't a lot that separates the two however, Barely making it is a whole lot more satisfying than barely not making it.
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