QL, N550 in 7-08 Rem

[frankm]

Would someone mind running a QL for me on the following data points, bullet, powder, etc. I ve been working with some mild loads with these components in a new rifle but would like to get some projections to see where I might be able to work up towards.

7-08 Rem
22” barrel
9.5 twist
N550 powder
162 gr Eldm bullet
2.950 oal
62,000 psi max

Thx much for any help.

 

[DrMike]

Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 162, Hornady ELD-M 28403 G7
Useable Case Capaci: 47.062 grain H2O = 3.056 cm³
Cartridge O.A.L. L6: 2.950 inch = 74.93 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Vihtavuori N550 *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   92    40.68   2433    2129   43465   9124     97.2    1.323
-09.0   93    41.13   2460    2176   44908   9219     97.6    1.303
-08.0   94    41.58   2486    2223   46400   9311     97.9    1.283
-07.0   95    42.04   2512    2271   47941   9399     98.2    1.264
-06.0   96    42.49   2539    2319   49535   9484     98.5    1.245
-05.0   97    42.94   2565    2367   51182   9565     98.7    1.227
-04.0   98    43.39   2592    2416   52886   9643     99.0    1.209  ! Near Maximum !
-03.0   99    43.84   2618    2465   54648   9716     99.2    1.191  ! Near Maximum !
-02.0  100    44.30   2644    2514   56471   9786     99.4    1.174  ! Near Maximum !
-01.0  101    44.75   2670    2564   58357   9852     99.5    1.157  ! Near Maximum !
+00.0  102    45.20   2696    2615   60309   9914     99.7    1.140  ! Near Maximum !
+01.0  103    45.65   2722    2665   62330   9972     99.8    1.123  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    46.10   2748    2716   64422  10026     99.9    1.107  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    46.56   2774    2768   66589  10075     99.9    1.091  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    47.01   2800    2819   68834  10120    100.0    1.076  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    47.46   2825    2871   71161  10161    100.0    1.060  !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    102    45.20   2756    2733   66364   9734    100.0    1.096  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    102    45.20   2624    2476   54350   9962     98.2    1.190  ! Near Maximum !

 

[frankm]

Thx mucho Dr Mike!!

 

[RL338]

Look like a perfect case fill.