7mm-08 QL request

[desertcj]

I am currently dialing in to a 120gr load with my Winchester model 70 featherweight. Looking pretty good at 46gr of Varget. A recent thread here has me wondering what might possible with a 140gr E-tip and RL16? I just measured my case capacity at 60gr of H20 which is WAY over what I've seen for other 7mm-08s? It's normal fire formed winchester brass.I tried up to 50gr of RL16 with 120gr TTsx and I just couldn't stuff enough powder in to get the velocity I was after. It did raise the question in my mond about what it would do with a 140gr or 160 gr bullet. Appreciate the help if you are in the mood! Thanks---Phil

 

[TackDriver284]

Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 52.963 grain H2O = 3.439 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon VARGET

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   88    41.40   2766    2038   41950   7930     95.5    1.232
-09.0   89    41.86   2793    2079   43155   8019     95.9    1.218
-08.0   90    42.32   2821    2121   44395   8106     96.2    1.205
-07.0   91    42.78   2849    2162   45672   8191     96.6    1.191
-06.0   92    43.24   2876    2205   46987   8274     96.9    1.178
-05.0   93    43.70   2904    2247   48340   8355     97.2    1.165
-04.0   93    44.16   2932    2290   49734   8433     97.5    1.152
-03.0   94    44.62   2959    2333   51169   8510     97.8    1.140  ! Near Maximum !
-02.0   95    45.08   2987    2377   52647   8583     98.1    1.127  ! Near Maximum !
-01.0   96    45.54   3014    2420   54169   8655     98.3    1.112  ! Near Maximum !
+00.0   97    46.00   3041    2465   55738   8724     98.6    1.097  ! Near Maximum !
+01.0   98    46.46   3069    2509   57353   8790     98.8    1.083  ! Near Maximum !
+02.0   99    46.92   3096    2554   59018   8854     99.0    1.069  ! Near Maximum !
+03.0  100    47.38   3123    2599   60733   8915     99.2    1.056  !DANGEROUS LOAD-DO NOT USE!
+04.0  101    47.84   3150    2644   62501   8973     99.3    1.043  !DANGEROUS LOAD-DO NOT USE!
+05.0  102    48.30   3177    2689   64323   9029     99.5    1.029  !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     97    46.00   3163    2665   64778   8559    100.0    1.028  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     97    46.00   2879    2208   46868   8507     93.5    1.177

Cartridge : 7 mm-08 Rem.
Bullet : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 52.963 grain H2O = 3.439 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-16

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   95    45.00   2767    2040   37007   8638     94.0    1.284
-09.0   96    45.50   2798    2086   38176   8743     94.6    1.268
-08.0   97    46.00   2829    2133   39385   8846     95.1    1.252
-07.0   98    46.50   2861    2181   40637   8945     95.5    1.236
-06.0   99    47.00   2892    2229   41933   9041     96.0    1.220
-05.0  100    47.50   2923    2277   43276   9134     96.4    1.205
-04.0  101    48.00   2955    2326   44668   9223     96.9    1.189
-03.0  102    48.50   2986    2376   46110   9308     97.2    1.174
-02.0  103    49.00   3017    2426   47607   9390     97.6    1.159
-01.0  104    49.50   3049    2477   49156   9467     97.9    1.144
+00.0  105    50.00   3080    2528   50765   9541     98.3    1.129
+01.0  106    50.50   3111    2579   52435   9611     98.5    1.113  ! Near Maximum !
+02.0  107    51.00   3142    2631   54165   9676     98.8    1.097  ! Near Maximum !
+03.0  108    51.50   3174    2684   55964   9736     99.0    1.081  ! Near Maximum !
+04.0  109    52.00   3205    2737   57832   9793     99.3    1.065  ! Near Maximum !
+05.0  110    52.50   3236    2790   59752   9844     99.4    1.050  !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    105    50.00   3240    2796   62091   9271    100.0    1.041  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    50.00   2863    2184   41179   9196     91.3    1.225

Cartridge : 7 mm-08 Rem.
Bullet : .284, 140, Nosler E-Tip 59955
Useable Case Capaci: 50.850 grain H2O = 3.302 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-16

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    44.10   2702    2270   42628   8753     97.8    1.300
-09.0   98    44.59   2732    2320   44026   8834     98.1    1.282
-08.0   99    45.08   2761    2369   45474   8912     98.4    1.265
-07.0  100    45.57   2790    2420   46975   8986     98.7    1.249
-06.0  101    46.06   2819    2471   48531   9056     99.0    1.232
-05.0  102    46.55   2848    2522   50146   9122     99.2    1.216
-04.0  103    47.04   2877    2573   51819   9183     99.4    1.200  ! Near Maximum !
-03.0  104    47.53   2906    2625   53558   9240     99.6    1.181  ! Near Maximum !
-02.0  105    48.02   2935    2678   55362   9292     99.7    1.164  ! Near Maximum !
-01.0  106    48.51   2964    2731   57235   9340     99.8    1.147  ! Near Maximum !
+00.0  107    49.00   2992    2784   59181   9382     99.9    1.130  ! Near Maximum !
+01.0  108    49.49   3021    2837   61203   9420    100.0    1.114  !DANGEROUS LOAD-DO NOT USE!
+02.0  109    49.98   3049    2891   63303   9453    100.0    1.098  !DANGEROUS LOAD-DO NOT USE!
+03.0  111    50.47   3078    2945   65488   9482    100.0    1.082  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    50.96   3106    2999   67761   9508    100.0    1.066  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    51.45   3134    3054   70119   9534    100.0    1.051  !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    107    49.00   3115    3017   72348   8940    100.0    1.047  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    107    49.00   2810    2455   47620   9443     96.0    1.234

Cartridge : 7 mm-08 Rem.
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 49.891 grain H2O = 3.239 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-16

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   94    42.30   2533    2280   41589   8594     98.9    1.400
-09.0   95    42.77   2560    2329   42989   8664     99.1    1.379
-08.0   97    43.24   2587    2378   44441   8731     99.3    1.358
-07.0   98    43.71   2614    2428   45943   8794     99.5    1.338
-06.0   99    44.18   2641    2478   47499   8852     99.7    1.318
-05.0  100    44.65   2668    2528   49112   8906     99.8    1.298
-04.0  101    45.12   2694    2579   50784   8955     99.9    1.279
-03.0  102    45.59   2721    2630   52514   9000     99.9    1.261  ! Near Maximum !
-02.0  103    46.06   2747    2681   54315   9041    100.0    1.242  ! Near Maximum !
-01.0  104    46.53   2773    2733   56178   9076    100.0    1.224  ! Near Maximum !
+00.0  105    47.00   2799    2784   58110   9109    100.0    1.206  ! Near Maximum !
+01.0  106    47.47   2825    2836   60123   9142    100.0    1.189  !DANGEROUS LOAD-DO NOT USE!
+02.0  107    47.94   2851    2888   62202   9173    100.0    1.172  !DANGEROUS LOAD-DO NOT USE!
+03.0  108    48.41   2877    2941   64349   9204    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    48.88   2903    2993   66570   9235    100.0    1.139  !DANGEROUS LOAD-DO NOT USE!
+05.0  110    49.35   2928    3046   68872   9264    100.0    1.122  !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    105    47.00   2905    2997   71130   8693    100.0    1.118  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    47.00   2638    2473   46292   9341     97.4    1.324

 

[Gunner46]

desertcj,

Straight up this is just My experience with RL-19 and a 7-08. Don't waste the time, nor money. I'm shooting a Ruger M77 boat paddle. The books told me I might expect 2875+, maybe even closer to 2900, with a 140 bullet.

At a Max charge, by Nosler book, I didn't even break 2700 fps and I had to do a lot of tinkering just to get that much into the case.

I'm going to stay with either Varget, or RL-15, and not look back. Never going to chase the 'Speed Train' again. I've got a RL-15/150 load at 2650, Varget/140 @ 2760, and a RL-15/120 @ 2900. All are sub 1 MOA.

Good enough !!

 

[desertcj]

Interesting. I am dialing in a load for a 120gr TTSX with 46gr of Varget for 3050fps. It looks possible to be at the same velocity with a 140gr with RL16 and that's cooking from a 7mm-08!

 

[desertcj]

Thank you tackdriver!

 

[mwess1113]

Don't be afraid to try Ramshot Big Game with the 120. About 50 grains should see around 3,000 fps.
Big Game also works well with the 140 grain bullet.


Sent from my iPhone using Tapatalk

 

[pharmseller]

140 AccuBond, 47.5 gr Big Game, WLRM primer, 2850 fps, big 5x5 bull, one shot at 225.

Same load, 303 yards, antelope herd buck, one shot.

140 Partition, same load, 2874 fps, 4x4 bull, one shot at 68.

Same load, spike bull, 346 yards, one shot.

Same load, big fork mulie, 541 yards, one shot.

Big Game with WLRM is the bee's knees. There's more but you get the idea.

Max load according to Nosler, so work up.





P