50 Beowolf

[latesvak]

I'm looking for a good round that I can cast up for this guy. I already cast for pistol and some rifle boolits but really want a good all around castable boolit for this upper and wanted to see what you guys think.

[latesvak]

And here I thought people would be jumping to help and throw in years of wisdom.

[remannino]

Haven't tried any other but happy with this mould. http://noebulletmolds.com/NV/product_info.php?cPath=43&products_id=638. It's the only thing I have run thru my Beowulf.

[remannino]

Here is the load I'm using with IMR 4227. I started with 37 GR which measured 1540 FPS which is darn close to what Quickload defines. Will work yo to 40 to 41 GR once I can get back to the range.


Cartridge : .50 Beowulf
Bullet : .503, 330, NOE 503 GR RF HP
Useable Case Capaci: 56.248 grain H2O = 3.652 cm�
Cartridge O.A.L. L6: 2.070 inch = 52.58 mm
Barrel Length : 16.0 inch = 406.4 mm
Powder : IMR 4227

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 69 32.80 1346 1328 12190 2695 70.8 1.620
-18.0 71 33.62 1382 1400 13021 2807 72.3 1.571
-16.0 73 34.44 1418 1473 13894 2919 73.7 1.524
-14.0 74 35.26 1454 1549 14816 3031 75.1 1.480
-12.0 76 36.08 1490 1626 15784 3142 76.5 1.438
-10.0 78 36.90 1525 1705 16803 3253 77.9 1.397
-08.0 79 37.72 1561 1786 17875 3363 79.2 1.358
-06.0 81 38.54 1597 1868 19002 3472 80.4 1.321
-04.0 83 39.36 1633 1953 20189 3580 81.7 1.285
-02.0 85 40.18 1668 2039 21437 3687 82.8 1.251
+00.0 86 41.00 1704 2127 22751 3792 84.0 1.219
+02.0 88 41.82 1739 2217 24135 3896 85.1 1.187
+04.0 90 42.64 1775 2308 25592 3998 86.2 1.157
+06.0 92 43.46 1810 2401 27126 4099 87.2 1.128
+08.0 93 44.28 1846 2496 28742 4197 88.2 1.100 ! Near Maximum !
+10.0 95 45.10 1881 2592 30447 4293 89.2 1.073 ! Near Maximum !

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 86 41.00 1817 2420 27370 4040 91.6 1.123
Data for burning rate decreased by 10% relative to nominal value:
-Ba 86 41.00 1571 1808 18526 3416 74.2 1.341

[rockrat]

I have used the Lee 440gr in my Beowulf. Smack on both ends.

[xacex]

Best accuracy so far for me with cast has also been the Lee 440, but a member here 06ackley was nice enough to send me out some of those NOE boolits you mentioned to try. No IMR 4227, but I have lil gun, and H110 to play with. Beowulf can be a little tricky because if you are to hot you will shear lugs off the bolt, and to low a charge will collapse the cases because of the rebated rim. The cartridge needs enough of a charge to expand the case, and grab onto the chamber wall. Clean chamber is important too because of this any oil in the chamber will cause collapsed cases. At least that is how it was explained to me.