300 Win Mag and 4831 SC

[hoyt-6190]

I am trying to work a load up with 180 gr Accubonds. I would like to use H 4831SC powder but don't really know where to start as Nosler doesn't list in the the #8 manual for 180 gr. bullets. Any information would be appreciated.

 

[HeathSexton]

www.hodgdon.com


Bullet Weight180 GR. SPR MT-SP

Hodgdon
H4831
.308"
3.285"
69.0
2,851
48,500 CUP

73.0C
2,966
53,200 CUP

 

[DrMike]

Welcome aboard. Always glad to welcome new people. Here's a QL projection that may help you.

Cartridge          : .300 Win. Mag.(SAAMI)
Bullet             : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 79.821 grain H2O = 5.183 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4831 SC

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   81    60.00   2393    2289   31866   9503     87.8    1.555
-18.0   83    61.50   2454    2407   34054   9825     89.2    1.512
-16.0   85    63.00   2515    2529   36395  10139     90.5    1.472
-14.0   87    64.50   2577    2654   38903  10444     91.7    1.427
-12.0   89    66.00   2639    2783   41587  10739     92.8    1.382
-10.0   91    67.50   2701    2916   44473  11023     93.9    1.339
-08.0   93    69.00   2763    3051   47566  11293     94.9    1.297
-06.0   95    70.50   2825    3191   50888  11550     95.8    1.257
-04.0   97    72.00   2888    3333   54461  11790     96.7    1.219  ! Near Maximum !
-02.0   99    73.50   2950    3479   58289  12014     97.4    1.181  ! Near Maximum !
+00.0  101    75.00   3013    3628   62384  12220     98.1    1.146  ! Near Maximum !
+02.0  103    76.50   3075    3779   66790  12407     98.6    1.111  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    78.00   3137    3934   71538  12573     99.1    1.077  !DANGEROUS LOAD-DO NOT USE!
+06.0  107    79.50   3200    4092   76662  12717     99.5    1.045  !DANGEROUS LOAD-DO NOT USE!
+08.0  109    81.00   3262    4253   82200  12839     99.7    1.014  !DANGEROUS LOAD-DO NOT USE!
+10.0  111    82.50   3324    4416   88198  12936     99.9    0.983  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    101    75.00   3152    3970   74303  12027    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    101    75.00   2826    3193   50909  11798     92.0    1.252

Drop back ten percent to start and work up watching for pressure signs.

 

[hoyt-6190]

Welcome aboard. Always glad to welcome new people. Here's a QL projection that may help you.

Cartridge          : .300 Win. Mag.(SAAMI)
Bullet             : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 79.821 grain H2O = 5.183 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4831 SC

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   81    60.00   2393    2289   31866   9503     87.8    1.555
-18.0   83    61.50   2454    2407   34054   9825     89.2    1.512
-16.0   85    63.00   2515    2529   36395  10139     90.5    1.472
-14.0   87    64.50   2577    2654   38903  10444     91.7    1.427
-12.0   89    66.00   2639    2783   41587  10739     92.8    1.382
-10.0   91    67.50   2701    2916   44473  11023     93.9    1.339
-08.0   93    69.00   2763    3051   47566  11293     94.9    1.297
-06.0   95    70.50   2825    3191   50888  11550     95.8    1.257
-04.0   97    72.00   2888    3333   54461  11790     96.7    1.219  ! Near Maximum !
-02.0   99    73.50   2950    3479   58289  12014     97.4    1.181  ! Near Maximum !
+00.0  101    75.00   3013    3628   62384  12220     98.1    1.146  ! Near Maximum !
+02.0  103    76.50   3075    3779   66790  12407     98.6    1.111  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    78.00   3137    3934   71538  12573     99.1    1.077  !DANGEROUS LOAD-DO NOT USE!
+06.0  107    79.50   3200    4092   76662  12717     99.5    1.045  !DANGEROUS LOAD-DO NOT USE!
+08.0  109    81.00   3262    4253   82200  12839     99.7    1.014  !DANGEROUS LOAD-DO NOT USE!
+10.0  111    82.50   3324    4416   88198  12936     99.9    0.983  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    101    75.00   3152    3970   74303  12027    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    101    75.00   2826    3193   50909  11798     92.0    1.252

Drop back ten percent to start and work up watching for pressure signs.

I have never used the Quick Load. From where would you recommend that I drop back ten percent from?

 

[DrMike]

Drop back ten percent from the maximum charge indicated. If you are familiar with the cartridge and the particular nuances of your rifle, that can be reduced somewhat. It is nevertheless a good rule to drop back and reevaluate whenever changing lot numbers or any component.

 

[Finaddictions]

I've found this to be a very accurate load in several 300's.

75g H4831 jumped .050"

Usually nets real close to 3,000 Fps. Kind of mirrors what Quickload is predicting above.

 

[DrMike]

Welcome aboard, Finaddictions. Sounds as if you are getting some fine velocity out of your 300 Win. What sort of accuracy do you see?

 

[Finaddictions]

In several rifles we've had tha load shoot between 1/2 & 3/4 of an inch. It's been very consistent.

 

[preacher]

I've found this to be a very accurate load in several 300's.

75g H4831 jumped .050"

Usually nets real close to 3,000 Fps. Kind of mirrors what Quickload is predicting above.

75gr exactly mirrors what we used with the Nosler 180BT, we used 73 for the older Barnes XBT. The best we found with the XBT was 76gr R22.

 

[fwood]

75 gr 4831sc Remington 700 24 inch barrel. VLD's and NAB.[ATTACH type="full" alt="IMG_0712.JPG

Fwood"]0[/ATTACH]

 

[hoyt-6190]

Good shooting! I plan on testing out my loads in the morning. I wish I could load the accubonds longer but my tikka magazine doesn't allow which kinda is a burden.

 

[Finaddictions]

I hear what you're saying on the Tikka mags, but on the other hand my experience with Accubonds is they don't mind a jump. I often start them at .050 off even when I have a magazine where they could be seated farther out.

 

[Elkman]

I am using the AB in my 7 mm mag and my most accurate group has the bullet seated @ 3.280, actually shorter than factory ammo.