Quickload velocity prediction

the 264 win mag is rated at 62366 psi .

26"bbl , RL26 at 70.0 gr , 3.375 COAL , 143 ELD-x , I have the burn rate of the powder adjusted to the speed of my lot of powder , BA 0.371 . with these settings this load produces ;
82607 PSI and should give 3328 FPS

max load should be ; 64.2 gr ,63472 psi , 3108 FPS

70.0 gr over load is 89.8% case fill .
64.2 gr max load is 82.3% case fill .
60.2 gr min load is 77.2% case fill .
I'd say there are better powder choices than RL26 for your combo . I like my cases fuller than this .
 
jimbires said:
the 264 win mag is rated at 62366 psi .

26"bbl , RL26 at 70.0 gr , 3.375 COAL , 143 ELD-x , I have the burn rate of the powder adjusted to the speed of my lot of powder , BA 0.371 . with these settings this load produces ;
82607 PSI and should give 3328 FPS

max load should be ; 64.2 gr ,63472 psi , 3108 FPS

70.0 gr over load is 89.8% case fill .
64.2 gr max load is 82.3% case fill .
60.2 gr min load is 77.2% case fill .
I'd say there are better powder choices than RL26 for your combo . I like my cases fuller than this .
Click to expand...
You are probably right. The R26 has been an experiment. I was looking for more speed than what I was getting with R33. It may be too fast of a powder for my case?
 
jimbires said:
the 264 win mag is rated at 62366 psi .

26"bbl , RL26 at 70.0 gr , 3.375 COAL , 143 ELD-x , I have the burn rate of the powder adjusted to the speed of my lot of powder , BA 0.371 . with these settings this load produces ;
82607 PSI and should give 3328 FPS

max load should be ; 64.2 gr ,63472 psi , 3108 FPS

70.0 gr over load is 89.8% case fill .
64.2 gr max load is 82.3% case fill .
60.2 gr min load is 77.2% case fill .
I'd say there are better powder choices than RL26 for your combo . I like my cases fuller than this .
Click to expand...
If you run those same numbers with R33 what do you come up with?
 
I'm not experienced with Quickload, but I'm skeptical on those pressure numbers based on the Alliant RL26 load data for similar cartridges.

Also, your brass wasn't showing extreme pressure signs. What brand brass are you using?

If you Chrono the 70gr load, let us know what your MV is.
 
phorwath said:
I'm not experienced with Quickload, but I'm skeptical on those pressure numbers based on the Alliant RL26 load data for similar cartridges.

Also, your brass wasn't showing extreme pressure signs. What brand brass are you using?

If you Chrono the 70gr load, let us know what your MV is.
Click to expand...
This was with Remington brass. I will hopefully get a chance to chrono in the next couple days and will post velocity when I do. Weather is terrible with wind and rain at the moment so it could take a few days.
I saw no signs of pressure, no primer cratering, no ejector marks.
At 72 gr i did see signs of pressure.
 
my first use of RL26 is this past year . I'm using it in my 7mm rem mag . I loaded up up powder charges in a ladder . I shot my first round an the velocity was very high . I thought this must be a fluke and fired the second round . it was the same powder charge , and had about the same velocity . I stopped shooting came home pulled these rounds apart . the load showed no pressure signs , but the velocity was 200 or 300 FPS to fast for a max load , and these are starting loads . I forget all the exact numbers , they could be in my notes . I think I figured I was about 5.0 grain over charging my cases . with this little bit of data I adjusted the burn speed of my powder in quickload . I mentioned this in another thread and a guy pointed this burn speed , for RL26 , needing adjusted in quickload . it's a well known glitch . I'll look to see if I can find this info . RL26 seems to hide pressure signs . just remember , pressure makes velocity . if your velocity is way high , your pressure is probably high too .
 
************** these would be max loads . start about 4.0 grain below these charge weights and work up **************************************
powder chart , set up for 62366 max pressure , and 105% case fill . your COAL , your case water capacity . the chart shows dangerous because these are max .


Cartridge : .264 Win. Mag.
Bullet : .264, 143, Hornady ELD-X 2635
Useable Case Capaci: 78.707 grain H2O = 5.110 cm³
Cartridge O.A.L. L6: 3.375 inch = 85.73 mm
Barrel Length : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 62366 psi, or 429 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

51 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 102.4 79.2 5.13 3288 99.7 62366 16683 1.259 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N570 98.0 75.0 4.86 3239 99.2 62366 16256 1.289 !DANGEROUS LOAD-DO NOT USE!
ReloadSwiss RS 80 101.0 79.5 5.15 3228 99.7 62366 15946 1.291 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-33 99.7 78.5 5.09 3223 99.4 62366 16037 1.294 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-50 104.0 81.6 5.29 3217 99.1 62366 16380 1.321 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H870 104.0 77.9 5.05 3210 99.9 62366 15570 1.296 !DANGEROUS LOAD-DO NOT USE!
Hodgdon Retumbo 101.5 74.0 4.80 3184 100.0 62366 14036 1.284 !DANGEROUS LOAD-DO NOT USE!
ADI AR 2225 101.5 74.0 4.80 3184 100.0 62366 14036 1.284 !DANGEROUS LOAD-DO NOT USE!
Norma 217 103.6 74.0 4.79 3184 100.0 62366 14419 1.308 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 90.1 66.8 4.33 3170 100.0 62366 14473 1.282 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 90.4 69.7 4.52 3167 99.8 62366 14737 1.291 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 97.3 70.6 4.57 3163 100.0 62366 14336 1.299 !DANGEROUS LOAD-DO NOT USE!
Bofors RP30 97.3 70.6 4.57 3163 100.0 62366 14336 1.299 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 92.7 71.8 4.65 3162 100.0 62366 14120 1.287 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 92.5 71.6 4.64 3161 100.0 62366 14086 1.287 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 94.2 66.4 4.31 3159 100.0 62366 13993 1.273 !DANGEROUS LOAD-DO NOT USE!
Bofors 12,7mmRA NC1214 Lot20115087 104.7 80.3 5.21 3158 93.6 62366 16045 1.323 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori 24N41 101.3 78.3 5.08 3155 95.5 62366 15198 1.273 !DANGEROUS LOAD-DO NOT USE!
ADI AR 2213 90.4 66.3 4.30 3150 100.0 62366 13918 1.268 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 94.0 70.8 4.59 3150 100.0 62366 13706 1.270 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 98.9 71.0 4.60 3148 100.0 62366 13670 1.270 !DANGEROUS LOAD-DO NOT USE!
ADI AR 2217 98.9 71.0 4.60 3148 100.0 62366 13670 1.270 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-22 90.4 66.3 4.30 3136 100.0 62366 13741 1.288 !DANGEROUS LOAD-DO NOT USE!
Bofors RP5/NP ~approximation 90.4 66.3 4.30 3136 100.0 62366 13741 1.288 !DANGEROUS LOAD-DO NOT USE!
Raufoss RA15 90.4 66.3 4.30 3136 100.0 62366 13741 1.288 !DANGEROUS LOAD-DO NOT USE!
Bofors RP15 92.9 66.7 4.32 3136 100.0 62366 13769 1.288 !DANGEROUS LOAD-DO NOT USE!
Winchester WXR 92.9 66.7 4.32 3136 100.0 62366 13769 1.288 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-25 95.1 68.6 4.45 3135 100.0 62366 13302 1.289 !DANGEROUS LOAD-DO NOT USE!
Bofors RP5 NT ~approximation 94.1 69.6 4.51 3132 99.8 62366 14028 1.267 !DANGEROUS LOAD-DO NOT USE!
Rottweil R905 91.9 66.2 4.29 3121 100.0 62366 13669 1.284 !DANGEROUS LOAD-DO NOT USE!
Ramshot Magnum 90.3 71.4 4.62 3108 100.0 62366 13122 1.294 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N170 101.9 73.2 4.74 3097 98.3 62366 14106 1.297 !DANGEROUS LOAD-DO NOT USE!
Hodgdon US 869 105.0 81.2 5.26 3097 94.9 59503 15035 1.317 ! Near Maximum !
Hodgdon H4831 93.3 65.8 4.26 3096 100.0 62366 13290 1.274 !DANGEROUS LOAD-DO NOT USE!
Hodgdon 50BMG 105.0 77.3 5.01 3095 91.2 58829 15304 1.317 ! Near Maximum !
Lovex D100 99.2 77.5 5.02 3082 96.0 62366 14051 1.287 !DANGEROUS LOAD-DO NOT USE!
IMR 4955 Enduron 91.3 64.4 4.18 3067 100.0 62366 12907 1.269 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-23 92.2 65.4 4.24 3065 100.0 62366 12352 1.304 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N160 93.7 65.2 4.23 3052 100.0 62366 12542 1.276 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N165 93.2 66.9 4.33 3048 100.0 62366 12307 1.290 !DANGEROUS LOAD-DO NOT USE!
IMR 7977 Enduron 95.9 68.9 4.46 3042 97.0 62366 13130 1.268 !DANGEROUS LOAD-DO NOT USE!
Accurate 3100 90.8 65.9 4.27 3031 100.0 62366 12125 1.319 !DANGEROUS LOAD-DO NOT USE!
Lovex S071 96.0 65.9 4.27 3031 100.0 62366 12125 1.319 !DANGEROUS LOAD-DO NOT USE!
Accurate 8700 105.0 79.5 5.15 3029 97.8 54093 14483 1.370 ! Near Maximum !
SNPE Vectan SP 13 105.0 77.8 5.04 3028 97.7 55660 14395 1.370 ! Near Maximum !
Vihtavuori 20N29 105.0 82.0 5.31 3020 95.8 54130 14875 1.390 ! Near Maximum !
PB Clermont PCL 513/520/9520 105.0 77.8 5.04 2969 96.1 52224 14297 1.410
NC A3502 ,test only 105.0 74.5 4.83 2767 77.0 43599 13225 1.486
TLP A 502(RH) ,test only 105.0 74.5 4.83 2730 78.9 41988 12941 1.527
V1734 7-multiperf ,test only 105.0 74.5 4.83 1962 38.4 22166 6593 2.023
 
there is more to adjusting quickload than 1-2 velocity readings and then jumping in and changing powder burn rate. he is slightly over pressure but if the brass is new and never fired it will hide the slight over pressure.
 
can1010 said:
there is more to adjusting quickload than 1-2 velocity readings and then jumping in and changing powder burn rate. he is slightly over pressure but if the brass is new and never fired it will hide the slight over pressure.
Click to expand...



your exactly right , that's why I said I have it adjusted to my powder lot . it's been brought to my attention that guys are finding rl26 burn rate to be about .368 , I found mine to be .371 . quickload has it at .331, if I remember right . what ba are you using for RL26 ?
 
Interesting stuff from Quickload. I don't own or use it, so I don't fully understand all the produced information. Not trying to dismiss the value of it.

If the OP's Remington cases hold primer pockets for 7 or more firings at his powder charges, then that would be the most definitive guide to acceptably safe operating pressure. If the pressures are there, the case head will yield to them, and the primer pockets will loosen up over repeated firings.

This is analogous to saying that the yield strain of the brass is the most reliable property, and indicator of pressure, in the mix. Quickload is the mathematical modeling of operating pressure. The yield strain of brass cases is set in concrete. A reasonably known, hard value. Rem brass will yield to excess operating pressure, no matter what a model predicts. And if it doesn't expand, the excess pressure isn't there no matter what the model predicted.
 
Last edited:
phorwath said:
Interesting stuff from Quickload. I don't own or use it, so I don't fully understand all the produced information. Not trying to dismiss the value of it.

If the OP's Remington cases hold primer pockets for 7 or more firings at his powder charges, then that would be the most definitive guide to acceptably safe operating pressure. If the pressures are there, the case head will yield to them, and the primer pockets will loosen up over repeated firings.

This is analogous to saying that the yield strain of the brass is the most reliable property, and indicator of pressure, in the mix. Quickload is the mathematical modeling of operating pressure. The yield strain of brass cases is set in concrete. A reasonably known, hard value. Rem brass will yield to excess operating pressure, no matter what a model predicts. And if it doesn't expand, the excess pressure isn't there no matter what the model predicted.
Click to expand...

Pretty sure that the yield strength of brass is NOT set in concrete. There are many, many alloys of brass and tempers that all affect the yield strength. Now, if we are talking about one specific lot and batch of brass that has been treated the same it's whole life then absolutely it's a solid baseline as to what load/pressure is acceptable. 7 loadings would be VERY acceptable to me for high end loads.
By the way, I don't have quickload either but the data I've used from it seems to be accurate. I'm consistently a couple grains of powder over predicted velocities, which I will attribute to moly coated bullets.
 
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