QL 340 weatherby

S

salmonchaser

Handloader
Dec 13, 2013
4,605
3,809
Looking for information I have notes in my 338 Jarrett log book indicating 89 grains of H1000 pushing a 250 gr. AccuBond “was a little hot” I don’t know where I came up with the idea to try that powder but I have a couple pounds of it. May have run a quick load a few years ago but I can‘t find the information.
The Jarrett has just a little more case capacity than the 340 bee. So I thought I would start there and make good use of the H1000 I have on hand.
H1000/250 grain AccuBond/ coal 3.70
Thanks in advance.
 
Code: 
Cartridge          : .340 Weath. Mag.
Bullet             : .338, 250, Nosler AccuBond 57287
Useable Case Capaci: 84.058 grain H2O = 5.458 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon H1000 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0  102    78.12   2553    3619   43167   9774     95.7    1.474
-09.0  103    78.99   2585    3711   44791   9884     96.3    1.449
-08.0  104    79.86   2618    3804   46487   9989     96.8    1.424
-07.0  105    80.72   2650    3898   48257  10088     97.2    1.399
-06.0  106    81.59   2682    3994   50106  10181     97.6    1.375
-05.0  108    82.46   2715    4091   52040  10268     98.0    1.351
-04.0  109    83.33   2747    4190   54060  10349     98.4    1.328
-03.0  110    84.20   2780    4289   56175  10423     98.7    1.305  ! Near Maximum !
-02.0  111    85.06   2812    4390   58390  10491     99.0    1.282  ! Near Maximum !
-01.0  112    85.93   2845    4492   60709  10552     99.3    1.260  ! Near Maximum !
+00.0  113    86.80   2877    4595   63140  10606     99.5    1.239  ! Near Maximum !
+01.0  114    87.67   2910    4699   65691  10652     99.7    1.217  !DANGEROUS LOAD-DO NOT USE!
+02.0  116    88.54   2942    4805   68370  10691     99.8    1.196  !DANGEROUS LOAD-DO NOT USE!
+03.0  117    89.40   2974    4911   71183  10722     99.9    1.175  !DANGEROUS LOAD-DO NOT USE!
+04.0  118    90.27   3007    5019   74142  10746    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
+05.0  119    91.14   3039    5127   77256  10761    100.0    1.135  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    113    86.80   2953    4842   69872  10373    100.0    1.187  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    113    86.80   2785    4305   56884  10643     97.4    1.297  ! Near Maximum !
 
Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler AccuBond 57287
Useable Case Capaci: 84.058 grain H2O = 5.458 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64000 psi, or 441 MPa
or a maximum loading ratio or filling of 110 %
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 !

12 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
--------------------------------- -----------------------------------------------------------------
ReloadSwiss RS 76 *C 110.0 91.7 5.94 2989 100.0 62791 11568 1.234 ! Near Maximum !
Alliant Reloder-26 *C 102.0 85.0 5.51 2950 100.0 64000 10755 1.248 ! Near Maximum !
Norma MRP *C 102.9 83.2 5.39 2930 100.0 64000 10904 1.247 ! Near Maximum !
Vihtavuori N560 *C 104.7 82.9 5.37 2928 99.2 64000 11305 1.242 ! Near Maximum !
PB Clermont PCL 517 107.4 88.8 5.76 2928 99.7 64000 11067 1.233 ! Near Maximum !
SNPE Vectan SP 12 107.2 88.7 5.75 2927 99.7 64000 11043 1.233 ! Near Maximum !
Accurate MAGPRO 104.9 86.4 5.60 2921 98.3 64000 11415 1.249 ! Near Maximum !
IMR 7828 109.2 82.2 5.33 2912 99.5 64000 10895 1.234 ! Near Maximum !
IMR 7828 SSC 103.3 82.2 5.33 2912 99.5 64000 10895 1.234 ! Near Maximum !
Vihtavuori N565 *C*T 109.6 87.2 5.65 2911 99.3 64000 11185 1.260 ! Near Maximum !
Bofors RP5/NP ~approximation 104.9 82.2 5.33 2902 99.9 64000 10807 1.250 ! Near Maximum !
Raufoss RA15 *C 104.9 82.2 5.33 2902 99.9 64000 10807 1.250 ! Near Maximum !
Alliant Reloder-22 *C 104.9 82.2 5.33 2902 99.9 64000 10807 1.250 ! Near Maximum !
Alliant Reloder-25 *C 110.0 84.8 5.49 2901 100.0 61801 10436 1.255 ! Near Maximum !
Bofors RP15 107.7 82.6 5.35 2901 99.9 64000 10830 1.250 ! Near Maximum !
Winchester WXR 107.7 82.6 5.35 2901 99.9 64000 10830 1.250 ! Near Maximum !
ADI AR 2213 104.2 81.6 5.29 2898 99.4 64000 10824 1.233 ! Near Maximum !
ReloadSwiss RS 70 *C 96.2 79.4 5.15 2895 100.0 64000 10112 1.241 ! Near Maximum !
ADI AP 2214 108.1 86.9 5.63 2891 99.6 64000 10655 1.231 ! Near Maximum !
Ramshot Magnum 104.6 88.3 5.72 2883 100.0 64000 10272 1.241 ! Near Maximum !
ReloadSwiss RS 60 *T 93.3 75.8 4.91 2879 100.0 64000 9654 1.245 ! Near Maximum !
ReloadSwiss RS 80 *C 110.0 92.5 5.99 2871 97.9 56259 11820 1.307 ! Near Maximum !
Rottweil R905 106.1 81.6 5.29 2869 99.1 64000 10582 1.251 ! Near Maximum !
Bofors RP5 NT *C ~approximation 107.9 85.3 5.52 2866 98.0 64000 10758 1.238 ! Near Maximum !
 
Cartridge : .340 Weath. Mag.
Bullet : .338, 250, Nosler AccuBond 57287
Useable Case Capaci: 84.058 grain H2O = 5.458 cm³
Cartridge O.A.L. L6: 3.675 inch = 93.35 mm
Barrel Length : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64000 psi, or 441 MPa
or a maximum loading ratio or filling of 110 %
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 !

12 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
--------------------------------- -----------------------------------------------------------------
ReloadSwiss RS 76 *C 110.0 91.7 5.94 2989 100.0 62791 11568 1.234 ! Near Maximum !
Alliant Reloder-26 *C 102.0 85.0 5.51 2950 100.0 64000 10755 1.248 ! Near Maximum !
Norma MRP *C 102.9 83.2 5.39 2930 100.0 64000 10904 1.247 ! Near Maximum !
Vihtavuori N560 *C 104.7 82.9 5.37 2928 99.2 64000 11305 1.242 ! Near Maximum !
PB Clermont PCL 517 107.4 88.8 5.76 2928 99.7 64000 11067 1.233 ! Near Maximum !
SNPE Vectan SP 12 107.2 88.7 5.75 2927 99.7 64000 11043 1.233 ! Near Maximum !
Accurate MAGPRO 104.9 86.4 5.60 2921 98.3 64000 11415 1.249 ! Near Maximum !
IMR 7828 109.2 82.2 5.33 2912 99.5 64000 10895 1.234 ! Near Maximum !
IMR 7828 SSC 103.3 82.2 5.33 2912 99.5 64000 10895 1.234 ! Near Maximum !
Vihtavuori N565 *C*T 109.6 87.2 5.65 2911 99.3 64000 11185 1.260 ! Near Maximum !
Bofors RP5/NP ~approximation 104.9 82.2 5.33 2902 99.9 64000 10807 1.250 ! Near Maximum !
Raufoss RA15 *C 104.9 82.2 5.33 2902 99.9 64000 10807 1.250 ! Near Maximum !
Alliant Reloder-22 *C 104.9 82.2 5.33 2902 99.9 64000 10807 1.250 ! Near Maximum !
Alliant Reloder-25 *C 110.0 84.8 5.49 2901 100.0 61801 10436 1.255 ! Near Maximum !
Bofors RP15 107.7 82.6 5.35 2901 99.9 64000 10830 1.250 ! Near Maximum !
Winchester WXR 107.7 82.6 5.35 2901 99.9 64000 10830 1.250 ! Near Maximum !
ADI AR 2213 104.2 81.6 5.29 2898 99.4 64000 10824 1.233 ! Near Maximum !
ReloadSwiss RS 70 *C 96.2 79.4 5.15 2895 100.0 64000 10112 1.241 ! Near Maximum !
ADI AP 2214 108.1 86.9 5.63 2891 99.6 64000 10655 1.231 ! Near Maximum !
Ramshot Magnum 104.6 88.3 5.72 2883 100.0 64000 10272 1.241 ! Near Maximum !
ReloadSwiss RS 60 *T 93.3 75.8 4.91 2879 100.0 64000 9654 1.245 ! Near Maximum !
ReloadSwiss RS 80 *C 110.0 92.5 5.99 2871 97.9 56259 11820 1.307 ! Near Maximum !
Rottweil R905 106.1 81.6 5.29 2869 99.1 64000 10582 1.251 ! Near Maximum !
Bofors RP5 NT *C ~approximation 107.9 85.3 5.52 2866 98.0 64000 10758 1.238 ! Near Maximum !
 
I surely do love a 340 Wby. I took one back in '98 to South Africa and then over to Namibia. I shot the then Barnes 210 XBT right at 3200. I used 82gr H4350. My only problem was having it built "too light". Its very efficient brake was super dooper loud and killed two scopes, the last one into my hunt. I then played with two 338 RUMs and felt like they were twins to the 340 Wby! Both of those were standard Sporter weight. Good luck to you pard!
 
Last edited:
I forgot how to do it at this point, but I used to have to alter the Ba rate on QL in order to get the Wby and RUM's to work out closer to what I saw for load data.

Seems like 2900+ shouldn't be too big a trick for a 340 with a 250 grain bullet, but I have 0 experience with it, but most data seems to play that out.
 
SJB358 said:
I used to have to alter the Ba rate on QL in order to get the Wby and RUM's to work out closer to what I saw for load data.
Click to expand...
Along with adjust the COAL to compensate for Wby’s long freebore. And then there is also calculating the correct weighing factor for the cartridge.
 
RL338 said:
Along with adjust the COAL to compensate for Wby’s long freebore. And then there is also calculating the correct weighing factor for the cartridge.
Click to expand...
YES! What this man says... ^^^^^^^^
 
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