Quickload request...270WIN, IMR 4955, 145ELDX

Code:
Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 145, Hornady ELX-X 27356
Useable Case Capaci: 59.135 grain H2O = 3.840 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4955 Enduron

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   96    50.67   2606    2187   46364  11052     92.7    1.241
-09.0   97    51.23   2635    2236   47874  11195     93.2    1.222
-08.0   98    51.80   2665    2286   49435  11336     93.7    1.203
-07.0   99    52.36   2694    2337   51048  11474     94.1    1.185
-06.0  100    52.92   2723    2388   52715  11609     94.6    1.168
-05.0  101    53.49   2753    2440   54439  11742     95.0    1.150
-04.0  102    54.05   2782    2493   56222  11871     95.5    1.133  ! Near Maximum !
-03.0  103    54.61   2812    2546   58066  11996     95.9    1.117  ! Near Maximum !
-02.0  104    55.17   2841    2599   59974  12119     96.3    1.100  ! Near Maximum !
-01.0  105    55.74   2871    2654   61949  12238     96.6    1.084  ! Near Maximum !
+00.0  106    56.30   2900    2708   63993  12353     97.0    1.068  ! Near Maximum !
+01.0  107    56.86   2930    2764   66110  12464     97.3    1.052  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    57.43   2959    2820   68302  12571     97.6    1.037  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    57.99   2989    2877   70574  12674     97.9    1.022  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    58.55   3019    2934   72928  12773     98.2    1.007  !DANGEROUS LOAD-DO NOT USE!
+05.0  111    59.12   3048    2992   75369  12868     98.5    0.992  !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    106    56.30   3032    2960   74964  12350     99.8    0.996  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    106    56.30   2730    2400   53223  11829     90.7    1.160

The latest QL shows this as an ELX-X. I assume that this is a typo since Harmut Broemel's first language is German. Also, to my knowledge, there is no ELX-X bullet.
 
Thank you Dr. Mike!
That pretty much matches with what I expected to find after shooting. It seems that 55-56gr is a pretty flat spot and should give good accuracy in that node. I'll do some fine tuning and see what I can come up with- but 3/4MOA is plenty fine for me.

Pretty sure a 145 ELD-X leaving the muzzle at 2900 would work for almost anything Evan would take a crack at.
 
Finally got the IMR4955 loads out for a test drive over a chronograph...better than expected. Sub MOA accuracy, a 2950MV and an ES of 15fps.

A long aerodynamic 145gr at 2950 makes a compelling load in the .270WIN. Zeroed at 200, it makes a point blank load from 0-300yds or so.

Evan made a bunch of 300 yard hits on a 10" plate look easy.
 
That sounds like a great load. Be sure to let us know how the ELD-X performs on game. Thanks. Bret
 
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