150 e-tip, re23, and the 280 AI

[gus_part]

Ok collective, I cannot find any data from Nosler or trustworthy sources regarding the 150 e-tip in the 280 AI using re-23. Hornady has data for their 150 CX but that bullet has relief grooves, obviously the e-tip does which makes me hesitant to even use it. Wondering what if anything is out there on this forum.

 

[JD338]

I shot that bullet in my 280 AI with RL22 and my best group went .300".

JD338

 

[DrMike]

Cartridge          : .280 Ack Imp
Bullet             : .284, 150, Nosler E-Tip  59426
Useable Case Capaci: 64.063 grain H2O = 4.160 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-23 *C *T

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   97    55.98   2785    2583   45352  10646    100.0    1.318
-09.0   98    56.60   2814    2637   46917  10702    100.0    1.298
-08.0   99    57.22   2843    2692   48542  10757    100.0    1.278
-07.0  100    57.85   2872    2747   50227  10812    100.0    1.258
-06.0  101    58.47   2901    2802   51979  10865    100.0    1.239
-05.0  102    59.09   2929    2858   53796  10917    100.0    1.220
-04.0  103    59.71   2958    2914   55684  10969    100.0    1.201  ! Near Maximum !
-03.0  104    60.33   2986    2970   57644  11020    100.0    1.183  ! Near Maximum !
-02.0  105    60.96   3014    3026   59681  11069    100.0    1.165  ! Near Maximum !
-01.0  107    61.58   3042    3083   61800  11118    100.0    1.147  ! Near Maximum !
+00.0  108    62.20   3070    3140   63997  11166    100.0    1.130  ! Near Maximum !
+01.0  109    62.82   3098    3197   66268  11213    100.0    1.113  !DANGEROUS LOAD-DO NOT USE!
+02.0  110    63.44   3126    3255   68618  11259    100.0    1.096  !DANGEROUS LOAD-DO NOT USE!
+03.0  111    64.07   3154    3313   71054  11303    100.0    1.080  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    64.69   3181    3371   73582  11347    100.0    1.064  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    65.31   3209    3430   76207  11390    100.0    1.048  !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    108    62.20   3127    3257   71127  10953    100.0    1.085  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    108    62.20   3000    2997   57053  11425    100.0    1.182  ! Near Maximum !

 

[orchemo]

Try 7828 SSC