200gr Semi round Nose

Alaska

Handloader
Aug 20, 2006
963
422
I have some old 200gr Semi Round Nose Partition bullets for 300 win Mag.

My old load of 76.0 of H4831 still works good.

9/11/2015
 

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That's a nice bull.

That old round nose is one I wish they would bring back sometimes.

It was a good one!

What kind of velocity are you seeing with your H4831 load? Looks like it works very well!

Thanks for sharing!

Dale
 
Great looking bull, congrats. I've never been disappointing with the results of a round nose bullet.
 
Too cool. Those old Noslers were a favorite of Bob Hagel.

Any details on the shot? Congrats on a great bull!
 
Great bull Jeff. Seems like the load is a little hot. That has been my standby load for the 180 load at 3000 to 3100 fps
 
Cartridge : .300 Win. Mag.(SAAMI)
Bullet : .308, 200, Nosler PART
Useable Case Capaci: 80.133 grain H2O = 5.203 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 60.80 2384 2524 35639 10131 92.0 1.554
-18.0 83 62.32 2444 2652 38136 10441 93.1 1.508
-16.0 85 63.84 2503 2783 40811 10738 94.2 1.460
-14.0 88 65.36 2563 2918 43679 11024 95.2 1.414
-12.0 90 66.88 2623 3055 46750 11294 96.1 1.370
-10.0 92 68.40 2683 3196 50018 11550 96.9 1.327
-08.0 94 69.92 2743 3340 53505 11789 97.7 1.286
-06.0 96 71.44 2802 3487 57243 12010 98.3 1.247 ! Near Maximum !
-04.0 98 72.96 2862 3637 61254 12211 98.8 1.209 ! Near Maximum !
-02.0 100 74.48 2921 3790 65561 12392 99.3 1.172 !DANGEROUS LOAD-DO NOT USE!
+00.0 102 76.00 2981 3945 70193 12551 99.6 1.137 !DANGEROUS LOAD-DO NOT USE!
+02.0 104 77.52 3040 4103 75179 12687 99.8 1.102 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 79.04 3098 4263 80555 12799 100.0 1.069 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 80.56 3157 4426 86361 12887 100.0 1.037 !DANGEROUS LOAD-DO NOT USE!
+08.0 110 82.08 3215 4591 92642 12963 100.0 1.007 !DANGEROUS LOAD-DO NOT USE!
+10.0 112 83.60 3273 4758 99450 13034 100.0 0.977 !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 102 76.00 3096 4256 83138 12126 100.0 1.059 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 76.00 2816 3521 57445 12447 95.5 1.239 ! Near Maximum !
 
That is same data my dad used back in the 60's

Before everything was revised.


300 WBY 85.0 with IMR 7828 180 Nos Part (given when IMR released 7828 to public was 86.0)
300 Win Mag 75.0 with IMR 4350 180 Nos Part
300 Win Mag 76.0 with H4831 with 200 Nos Part
338 Win Mag 78.0 with RL19 with 225 Nos Part Duplicates Fed High Energy Load (new Load) I have used it but ........with the 225gr TTSX I use 74.0 of RL 19


the 225gr AFrame IMR 4350 @ 71.0
 
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