30-06 AI Load Data

[ar15barrels]

Here is another pass with your corrected specs:

Cartridge          : .30-06 Ack Imp
Bullet             : .308, 150, Hornady FMJ-BT 3037
Useable Case Capaci: 63.104 grain H2O = 4.097 cm³
Cartridge O.A.L. L6: 3.183 inch = 80.85 mm
Barrel Length      : 20.5 inch = 520.7 mm
Powder             : Hodgdon H4895

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.962% 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

-09.6   81    47.00   2589    2233   40402  10053     96.0    1.181
-08.7   82    47.50   2615    2278   41531  10163     96.3    1.165
-07.7   83    48.00   2641    2322   42689  10271     96.7    1.150
-06.7   83    48.50   2666    2367   43877  10376     97.0    1.135
-05.8   84    49.00   2692    2413   45096  10478     97.3    1.120
-04.8   85    49.50   2717    2459   46346  10578     97.6    1.106
-03.8   86    50.00   2742    2504   47628  10676     97.9    1.091
-02.9   87    50.50   2767    2551   48943  10770     98.2    1.078
-01.9   88    51.00   2793    2597   50293  10862     98.4    1.064  ! Near Maximum !
-01.0   89    51.50   2818    2644   51677  10950     98.6    1.050  ! Near Maximum !
+00.0   89    52.00   2843    2692   53098  11036     98.8    1.037  ! Near Maximum !
+01.0   90    52.50   2868    2739   54555  11119     99.0    1.024  ! Near Maximum !
+01.9   91    53.00   2893    2787   56051  11199     99.2    1.011  ! Near Maximum !
+02.9   92    53.50   2917    2835   57586  11275     99.4    0.998  ! Near Maximum !
+03.8   93    54.00   2942    2883   59161  11349     99.5    0.986  !DANGEROUS LOAD-DO NOT USE!
+04.8   94    54.50   2967    2932   60778  11418     99.6    0.974  !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     89    52.00   2962    2922   62297  10788    100.0    0.965  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     89    52.00   2680    2393   44032  10778     93.8    1.131

[LateForDinner]

This is awesome! Thank you very much!

-Bill

Here is another pass with your corrected specs:

Cartridge          : .30-06 Ack Imp
Bullet             : .308, 150, Hornady FMJ-BT 3037
Useable Case Capaci: 63.104 grain H2O = 4.097 cm³
Cartridge O.A.L. L6: 3.183 inch = 80.85 mm
Barrel Length      : 20.5 inch = 520.7 mm
Powder             : Hodgdon H4895

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.962% 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

-09.6   81    47.00   2589    2233   40402  10053     96.0    1.181
-08.7   82    47.50   2615    2278   41531  10163     96.3    1.165
-07.7   83    48.00   2641    2322   42689  10271     96.7    1.150
-06.7   83    48.50   2666    2367   43877  10376     97.0    1.135
-05.8   84    49.00   2692    2413   45096  10478     97.3    1.120
-04.8   85    49.50   2717    2459   46346  10578     97.6    1.106
-03.8   86    50.00   2742    2504   47628  10676     97.9    1.091
-02.9   87    50.50   2767    2551   48943  10770     98.2    1.078
-01.9   88    51.00   2793    2597   50293  10862     98.4    1.064  ! Near Maximum !
-01.0   89    51.50   2818    2644   51677  10950     98.6    1.050  ! Near Maximum !
+00.0   89    52.00   2843    2692   53098  11036     98.8    1.037  ! Near Maximum !
+01.0   90    52.50   2868    2739   54555  11119     99.0    1.024  ! Near Maximum !
+01.9   91    53.00   2893    2787   56051  11199     99.2    1.011  ! Near Maximum !
+02.9   92    53.50   2917    2835   57586  11275     99.4    0.998  ! Near Maximum !
+03.8   93    54.00   2942    2883   59161  11349     99.5    0.986  !DANGEROUS LOAD-DO NOT USE!
+04.8   94    54.50   2967    2932   60778  11418     99.6    0.974  !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     89    52.00   2962    2922   62297  10788    100.0    0.965  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     89    52.00   2680    2393   44032  10778     93.8    1.131

[LateForDinner]

https://imrpowder.com/wp-content/upl...ifle-loads.pdf

[sofbak]

Did you clean that dented case before you photographed it? Was it soot coated?

Also, was the dented case fireformed or "stock"?

[LynnJr]

The dented case was from too light of a load. When there isn't enough pressure the neck doesn't stay against the chamber wall and the pressure collapses the case.
Try 32 grains or more.
If you plan on shooting heavier bullets in the 190 grain range start at 60 grains of RE22 you will like the results.

[elk hunter]

First let me say that I have exactly zero experience with the 30-06 AI. But I have shot a .257 Roberts AI for years. Here's how I fire formed the factory Rem. .257 Roberts brass into the AI brass. I picked out a starting load for the .257 Roberts using a 87-100 grain bullet (which ever I had at the time) and loaded them up with the bullets/slugs so long that when I chambered them I actually pushed the slugs back into the neck deeper and fired them. NO signs of high pressure, no caved in cases like you have and they shot superb. I'm not suggesting you do any of this but that's what worked for me. HTH
elk hunter

[LateForDinner]

Thanks for the reply. Yes I did clean the case, I thought there was a split in the dent and yes the neck was soot coated.

The dented case was stock. I was trying to fire form them but I don't think the load was hot enough....

Did you clean that dented case before you photographed it? Was it soot coated?

Also, was the dented case fireformed or "stock"?

[LateForDinner]

Thank you very much for your reply, I was thinking the same but had no data to back me up.

The dented case was from too light of a load. When there isn't enough pressure the neck doesn't stay against the chamber wall and the pressure collapses the case.
Try 32 grains or more.
If you plan on shooting heavier bullets in the 190 grain range start at 60 grains of RE22 you will like the results.

[fguffey]

[QUOTE=bbuhlman;22884425]

You'll need to measure your gun.

Thanks for your reply. What kind of measurements are you talking about?

Brumslie is referring to measuring the chamber. Helping reloader measure the chamber dimensions from the shoulder of the chamber to the bolt face is a thankless job.

And then there is the information about case length. Reloaders do not measure before and again after, if they did they would understand the question about 30/06 Ackely improved case length; How is it possible to get a 2.494" case length out of a 30/06 case that has been fire formed?

F. Guffey

[LateForDinner]

Thanks for your reply. I do check case length before and after. The fire forming process should reduce case length.

If you are referring to headspace, I have not checked with gauges. I have checked with a .004" shim on the case head of a fire formed case and the bolt would not close.

[QUOTE=fguffey;22983051]

Brumslie is referring to measuring the chamber. Helping reloader measure the chamber dimensions from the shoulder of the chamber to the bolt face is a thankless job.

And then there is the information about case length. Reloaders do not measure before and again after, if they did they would understand the question about 30/06 Ackely improved case length; How is it possible to get a 2.494" case length out of a 30/06 case that has been fire formed?

F. Guffey

[fguffey]

Thanks for your reply. I do check case length before and after. The fire forming process should reduce case length.

If you are referring to headspace, I have not checked with gauges. I have checked with a .004" shim on the case head of a fire formed case and the bolt would not close.

No, the fire forming process normally increases the length of the case from the shoulder to the case head. A reloader that can measure case length from the shoulder to the case head can determine the length of the chamber from the shoulder of the chamber to the bolt face.

There is no excuse for a reloader to not be able to measure the length of the case from the shoulder/datum to the case head. There is no excuse for the reloader not to have a tool for measuring case length from the datum to the case head. There is no excuse a reloader can make up for not being able to compare the length of a minimum length/full length sized case and a fired case. I measure the length of the chamber from the shoulder/datum to the bolt face before I size and or form cases for the chamber.

If you are referring to headspace, I have not checked with gauges. I have checked with a .004" shim on the case head of a fire formed case and the bolt would not close.