7mm-08 QL data?

nhenry

nhenry

Handloader
Feb 7, 2022
584
987
Could anyone run me the data on 7mm-08 using a 120gr TTSX over IMR 4350.
Barrel's a 24" 1:9.25tw.
Thanks in advance. Barnes doesn't have data with that powder.
 
Code: 
Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 47.971 grain H2O = 3.115 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 4350

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  100    44.01   2734    1991   41853   7648     88.8    1.234
-09.0  101    44.50   2765    2038   43302   7752     89.4    1.215
-08.0  102    44.99   2797    2085   44806   7854     90.0    1.196
-07.0  103    45.48   2829    2133   46367   7954     90.6    1.178
-06.0  105    45.97   2861    2181   47990   8052     91.1    1.160
-05.0  106    46.46   2893    2230   49674   8148     91.7    1.142
-04.0  107    46.94   2925    2280   51424   8241     92.2    1.125  ! Near Maximum !
-03.0  108    47.43   2957    2330   53243   8332     92.7    1.107  ! Near Maximum !
-02.0  109    47.92   2990    2382   55135   8421     93.2    1.091  ! Near Maximum !
-01.0  110    48.41   3022    2433   57105   8508     93.7    1.074  ! Near Maximum !
+00.0  111    48.90   3054    2486   59154   8591     94.2    1.058  ! Near Maximum !
+01.0  112    49.39   3087    2539   61287   8672     94.7    1.042  !DANGEROUS LOAD-DO NOT USE!
+02.0  113    49.88   3119    2593   63510   8750     95.1    1.026  !DANGEROUS LOAD-DO NOT USE!
+03.0  115    50.37   3152    2647   65827   8825     95.5    1.011  !DANGEROUS LOAD-DO NOT USE!
+04.0  116    50.86   3184    2702   68242   8897     95.9    0.995  !DANGEROUS LOAD-DO NOT USE!
+05.0  117    51.35   3217    2758   70762   8966     96.3    0.980  !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    111    48.90   3214    2753   70720   8711     98.7    0.982  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    111    48.90   2853    2169   48619   8095     86.4    1.154

As an aside, QL doesn't take into account twist when calculating a load.
 
DrMike said:
Code: 
Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 47.971 grain H2O = 3.115 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 4350

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  100    44.01   2734    1991   41853   7648     88.8    1.234
-09.0  101    44.50   2765    2038   43302   7752     89.4    1.215
-08.0  102    44.99   2797    2085   44806   7854     90.0    1.196
-07.0  103    45.48   2829    2133   46367   7954     90.6    1.178
-06.0  105    45.97   2861    2181   47990   8052     91.1    1.160
-05.0  106    46.46   2893    2230   49674   8148     91.7    1.142
-04.0  107    46.94   2925    2280   51424   8241     92.2    1.125  ! Near Maximum !
-03.0  108    47.43   2957    2330   53243   8332     92.7    1.107  ! Near Maximum !
-02.0  109    47.92   2990    2382   55135   8421     93.2    1.091  ! Near Maximum !
-01.0  110    48.41   3022    2433   57105   8508     93.7    1.074  ! Near Maximum !
+00.0  111    48.90   3054    2486   59154   8591     94.2    1.058  ! Near Maximum !
+01.0  112    49.39   3087    2539   61287   8672     94.7    1.042  !DANGEROUS LOAD-DO NOT USE!
+02.0  113    49.88   3119    2593   63510   8750     95.1    1.026  !DANGEROUS LOAD-DO NOT USE!
+03.0  115    50.37   3152    2647   65827   8825     95.5    1.011  !DANGEROUS LOAD-DO NOT USE!
+04.0  116    50.86   3184    2702   68242   8897     95.9    0.995  !DANGEROUS LOAD-DO NOT USE!
+05.0  117    51.35   3217    2758   70762   8966     96.3    0.980  !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    111    48.90   3214    2753   70720   8711     98.7    0.982  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    111    48.90   2853    2169   48619   8095     86.4    1.154

As an aside, QL doesn't take into account twist when calculating a load.
Click to expand...
Thanks for the info. Also, I wasn't sure about the twist rate, though I included it because it can affect pressures as you get faster twist
 
Yeah, if he has any. Sure won't find any in these crazy times. If you do you better buy a lottery ticket. LOL
 
Unfortunately, I've never had a small caliber like this so I've never owned any. Cabela's has a ton of powder, though, so maybe they'll have a little bit.
 
a couple more powders to look at , RL17 , and win 760 . RL17 will be tops in velocity ,about 3200FPS with about a 108% case fill .
win 760 gives about 3150FPS with 107% case fill

I run RL17 in one of my 7mm-08's it works well , and gives great velocity .
 
AFG270 said:
Yeah, if he has any. Sure won't find any in these crazy times. If you do you better buy a lottery ticket. LOL
Click to expand...

Plenty of it around here, but it's not what I'd call cheap. $43-$45 a lb. Was just in a shop today that had as much Varget on the shelf as they could get on there, but it was $45.

jimbires said:
a couple more powders to look at , RL17 , and win 760 . RL17 will be tops in velocity ,about 3200FPS with about a 108% case fill .
win 760 gives about 3150FPS with 107% case fill

I run RL17 in one of my 7mm-08's it works well , and gives great velocity .
Click to expand...

I'm wondering how CFE 223 would work also as an option? Just slightly slower than Varget in burn rate and Hodgdon is showing 3150 with a Nosler 120 BT without a compressed load.

As a side note to all the above posts and info, I liked Varget in the testing I've done with a couple 7-08's. It done real well, but that was with 139 grain bullets so can't comment on the 120's.
 
Code: 
Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 47.965 grain H2O = 3.114 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-17 *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    44.78   2856    2174   41406   8730     95.7    1.219
-09.0   98    45.27   2891    2227   42892   8828     96.2    1.199
-08.0   99    45.77   2926    2281   44438   8922     96.7    1.180
-07.0  100    46.27   2960    2335   46048   9011     97.1    1.161
-06.0  101    46.77   2995    2390   47723   9096     97.6    1.142
-05.0  102    47.26   3030    2446   49466   9175     98.0    1.123
-04.0  103    47.76   3064    2502   51284   9249     98.3    1.105  ! Near Maximum !
-03.0  104    48.26   3099    2559   53177   9318     98.6    1.087  ! Near Maximum !
-02.0  105    48.76   3134    2616   55151   9382     98.9    1.070  ! Near Maximum !
-01.0  106    49.25   3168    2674   57211   9439     99.2    1.053  ! Near Maximum !
+00.0  107    49.75   3203    2733   59361   9491     99.4    1.036  ! Near Maximum !
+01.0  108    50.25   3237    2792   61605   9537     99.6    1.019  !DANGEROUS LOAD-DO NOT USE!
+02.0  109    50.75   3271    2852   63951   9577     99.8    1.003  !DANGEROUS LOAD-DO NOT USE!
+03.0  110    51.24   3306    2912   66401   9610     99.9    0.987  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    51.74   3340    2972   68966   9637     99.9    0.971  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    52.24   3374    3033   71646   9658    100.0    0.955  !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    107    49.75   3289    2882   65575   9298    100.0    0.993  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    107    49.75   3099    2558   53569   9506     97.3    1.084  ! Near Maximum !
Code: 
Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 47.965 grain H2O = 3.114 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon CFE223 *C

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   91    43.92   2809    2103   41662   8221     93.8    1.227
-09.0   92    44.41   2841    2151   43092   8320     94.3    1.208
-08.0   93    44.90   2874    2201   44608   8415     94.8    1.189
-07.0   94    45.38   2906    2251   46165   8508     95.3    1.171
-06.0   95    45.87   2939    2301   47782   8597     95.8    1.153
-05.0   96    46.36   2971    2352   49462   8683     96.2    1.135
-04.0   97    46.85   3003    2404   51206   8766     96.6    1.118  ! Near Maximum !
-03.0   98    47.34   3036    2456   53019   8846     97.0    1.101  ! Near Maximum !
-02.0   99    47.82   3068    2508   54904   8921     97.4    1.084  ! Near Maximum !
-01.0  100    48.31   3101    2562   56866   8994     97.7    1.067  ! Near Maximum !
+00.0  101    48.80   3133    2615   58904   9062     98.1    1.051  ! Near Maximum !
+01.0  102    49.29   3165    2669   61029   9126     98.4    1.035  !DANGEROUS LOAD-DO NOT USE!
+02.0  103    49.78   3198    2724   63239   9186     98.6    1.020  !DANGEROUS LOAD-DO NOT USE!
+03.0  104    50.26   3230    2780   65543   9242     98.9    1.004  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    50.75   3262    2835   67942   9294     99.1    0.989  !DANGEROUS LOAD-DO NOT USE!
+05.0  106    51.24   3294    2892   70445   9342     99.3    0.974  !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    101    48.80   3215    2754   65032   9016     99.6    1.010  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    101    48.80   3037    2458   53187   8980     95.4    1.098  ! Near Maximum !
 
Goodness. I can get CFE 223 about anywhere nowadays and that seems like the ticket. 100% fill at a theorized 3100 ain't shabby at all.
 
nhenry said:
Goodness. I can get CFE 223 about anywhere nowadays and that seems like the ticket. 100% fill at a theorized 3100 ain't shabby at all.
Click to expand...
And with very reasonable pressure. Might not work out in real life like it is on paper, but that's why I brought it up. Seems like an attractive enough solution that it's worth trying out.
 
ShadeTree said:
And with very reasonable pressure. Might not work out in real life like it is on paper, but that's why I brought it up. Seems like an attractive enough solution that it's worth trying out.
Click to expand...
I'll have to pick up a few lbs tonight. Thanks for the recommendation
 
nhenry said:
I'll have to pick up a few lbs tonight. Thanks for the recommendation
Click to expand...
Hope it works for you. You can be my guinee pig. Ha. I got a 7-08 I'm looking to work with. Will try the Varget load that's worked for me in the past, but depending on your results I might pick up some 223 myself. For me, it being a ball powder, I'd probably try it as well with magnum primers as I've got plenty of those.
 
Code: 
Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 47.965 grain H2O = 3.114 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H414

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    44.73   2798    2086   41508   8273     89.6    1.230
-09.0   97    45.23   2832    2137   42996   8385     90.2    1.210
-08.0   98    45.72   2866    2188   44543   8495     90.8    1.191
-07.0   99    46.22   2900    2240   46155   8602     91.4    1.172
-06.0  100    46.72   2934    2294   47831   8706     92.0    1.153
-05.0  101    47.22   2968    2347   49574   8808     92.6    1.135
-04.0  102    47.71   3002    2402   51391   8907     93.2    1.117  ! Near Maximum !
-03.0  103    48.21   3037    2457   53284   9003     93.7    1.099  ! Near Maximum !
-02.0  104    48.71   3071    2513   55258   9095     94.2    1.081  ! Near Maximum !
-01.0  105    49.20   3106    2570   57316   9184     94.7    1.064  ! Near Maximum !
+00.0  106    49.70   3140    2627   59462   9269     95.2    1.047  ! Near Maximum !
+01.0  107    50.20   3175    2686   61694   9351     95.7    1.031  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    50.69   3209    2745   64042   9429     96.1    1.014  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    51.19   3244    2804   66486   9503     96.5    0.998  !DANGEROUS LOAD-DO NOT USE!
+04.0  111    51.69   3279    2865   69042   9573     96.9    0.982  !DANGEROUS LOAD-DO NOT USE!
+05.0  112    52.19   3314    2926   71715   9639     97.3    0.967  !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    106    49.70   3233    2786   65832   9344     97.8    1.004  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    106    49.70   3034    2454   53551   9074     91.6    1.096  ! Near Maximum !
 
Code: 
Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 120, Barnes 'TTSX'BT 30298
Useable Case Capaci: 47.965 grain H2O = 3.114 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Ramshot Big Game

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   91    43.02   2816    2114   42329   8081     95.4    1.220
-09.0   92    43.50   2848    2161   43778   8169     95.9    1.201
-08.0   93    43.98   2879    2209   45279   8254     96.3    1.183
-07.0   94    44.45   2910    2257   46834   8336     96.7    1.165
-06.0   95    44.93   2942    2306   48450   8414     97.1    1.148
-05.0   96    45.41   2973    2355   50125   8489     97.5    1.131
-04.0   97    45.89   3004    2405   51863   8561     97.8    1.114  ! Near Maximum !
-03.0   98    46.37   3035    2455   53667   8629     98.1    1.097  ! Near Maximum !
-02.0   99    46.84   3066    2505   55540   8694     98.4    1.081  ! Near Maximum !
-01.0  100    47.32   3097    2556   57485   8755     98.7    1.065  ! Near Maximum !
+00.0  101    47.80   3128    2608   59507   8812     98.9    1.049  ! Near Maximum !
+01.0  103    48.28   3159    2660   61608   8865     99.1    1.034  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    48.76   3190    2712   63792   8913     99.3    1.019  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    49.23   3221    2764   66063   8958     99.5    1.004  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    49.71   3252    2817   68428   8999     99.6    0.989  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    50.19   3282    2871   70888   9035     99.8    0.974  !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    101    47.80   3204    2736   65728   8703     99.9    1.009  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    101    47.80   3039    2461   53695   8795     96.8    1.095  ! Near Maximum !
 
Big Game also seems very viable. Good case fill and pressure for the velocities
 
I would think CFE223 would work well, I'm using it in my 22-250 and 243 with light bullets with excellent results. It looks like Big Game would work well also.
 
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