QL request for 300 Win Mag

michsteve

Handloader
Aug 20, 2020
532
873
So I have all my stuff now for the PSA Browning bar deal I got last month.
What I have is the Browning Bar MK3 in .300 Win Mag.
I want to use the federal terminal ascent 175 grain bullet I got a good amount last winter pulled from Am reloading this should be a good combo i think

Stats.
300 Win Mag
Browning Bar MK# 24" barrel
Norma new brass
Federal Gold Match that came with the brass so not sure if 210 or 215
Federal Terminal Ascent 175 grain bullet
I want to use Ramshot Magnum

I do have Re 22 and Ramshot Hunter that federal has recipes for but the Magnum is close to the Re26 that is at top of the velocity for this particular setup and I saw the same for Sierra 175 grain bullets so it should work for the terminal ascent. Also I have a lot of Magnum and only use it for the 7MM RM so this would be another way to use up the powder.

Not a rush deal I have plenty of choices for upcoming deer season already sighted in. This is just a start to seeing how the new girl handles.
 
Code:
Cartridge          : .300 Win. Mag.(SAAMI)
Bullet             : .308, 175, Fed Terminal ASC Comp Bul
Useable Case Capaci: 77.947 grain H2O = 5.061 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Ramshot Magnum

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   94    73.53   2737    2911   42162  11275     95.9    1.353
-09.0   95    74.35   2773    2989   43840  11402     96.5    1.328
-08.0   96    75.16   2810    3068   45595  11523     97.0    1.304
-07.0   97    75.98   2846    3148   47435  11637     97.5    1.280
-06.0   98    76.80   2883    3229   49361  11743     97.9    1.256
-05.0   99    77.62   2919    3311   51368  11841     98.3    1.233
-04.0  100    78.43   2956    3395   53504  11932     98.7    1.210
-03.0  101    79.25   2992    3480   55732  12014     99.0    1.188  ! Near Maximum !
-02.0  102    80.07   3029    3565   58070  12087     99.3    1.166  ! Near Maximum !
-01.0  103    80.88   3066    3652   60533  12151     99.5    1.144  ! Near Maximum !
+00.0  104    81.70   3102    3740   63122  12206     99.7    1.123  ! Near Maximum !
+01.0  105    82.52   3139    3828   65844  12252     99.8    1.102  !DANGEROUS LOAD-DO NOT USE!
+02.0  106    83.33   3175    3918   68724  12287     99.9    1.081  !DANGEROUS LOAD-DO NOT USE!
+03.0  108    84.15   3212    4009   71755  12313    100.0    1.061  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    84.97   3248    4101   74957  12328    100.0    1.041  !DANGEROUS LOAD-DO NOT USE!
+05.0  110    85.79   3285    4193   78339  12338    100.0    1.021  !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    104    81.70   3188    3949   70982  11924    100.0    1.072  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    104    81.70   2998    3493   56051  12270     97.8    1.181  ! Near Maximum !
 
Thanks for the help this shows what I thought that Ramshot Magnum would be close to RE26 in numbers.
Federal did not test Magnum powder or decided not to list it. They had Ramshot Hunter which works well with the 300 WSM.
 
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