QL Calc Request

[Bucky5]

If one of you guys gets a free moment, would you please run the following QL calc for me. The rifle is a 243, the bullet is a Sierra 75 gr HP, and the powder in IMR4350. I have both 22" and 24" barreled rifles, so either one will give me the estimate I'm looking to see. TIA, Buck

 

[TackDriver284]

Hope that helps.

Cartridge : .243 Win.
Bullet : .243, 75, Sierra HP 1510
Useable Case Capaci: 52.253 grain H2O = 3.393 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 22.0 inch = 558.8 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   86    41.40   2890    1391   40136  10198     91.1    1.193
-09.0   87    41.86   2921    1421   41399  10330     91.7    1.176
-08.0   88    42.32   2953    1452   42701  10459     92.3    1.159
-07.0   89    42.78   2984    1483   44043  10586     92.8    1.143
-06.0   90    43.24   3016    1515   45426  10710     93.4    1.126
-05.0   91    43.70   3047    1546   46851  10832     93.9    1.110
-04.0   92    44.16   3078    1578   48321  10950     94.4    1.095
-03.0   93    44.62   3110    1611   49836  11065     94.9    1.079
-02.0   94    45.08   3141    1643   51397  11177     95.3    1.064  ! Near Maximum !
-01.0   95    45.54   3172    1676   53008  11285     95.7    1.049  ! Near Maximum !
+00.0   96    46.00   3204    1709   54668  11390     96.2    1.035  ! Near Maximum !
+01.0   97    46.46   3235    1743   56380  11491     96.6    1.020  ! Near Maximum !
+02.0   98    46.92   3266    1776   58147  11588     96.9    1.006  ! Near Maximum !
+03.0   99    47.38   3297    1810   59968  11682     97.3    0.993  !DANGEROUS LOAD-DO NOT USE!
+04.0  100    47.84   3328    1845   61848  11771     97.6    0.979  !DANGEROUS LOAD-DO NOT USE!
+05.0  101    48.30   3359    1879   63787  11857     98.0    0.966  !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     96    46.00   3360    1880   64175  11476     99.6    0.961  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    46.00   3004    1503   45321  10808     89.2    1.129

Cartridge : .243 Win.
Bullet : .243, 75, Sierra HP 1510
Useable Case Capaci: 52.253 grain H2O = 3.393 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 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   86    41.40   2965    1464   40136   9331     92.2    1.250
-09.0   87    41.86   2996    1495   41399   9446     92.8    1.232
-08.0   88    42.32   3028    1527   42701   9558     93.3    1.215
-07.0   89    42.78   3060    1559   44043   9667     93.8    1.198
-06.0   90    43.24   3091    1591   45426   9774     94.3    1.181
-05.0   91    43.70   3123    1624   46851   9878     94.8    1.164
-04.0   92    44.16   3154    1657   48321   9978     95.3    1.148
-03.0   93    44.62   3185    1690   49836  10076     95.7    1.132
-02.0   94    45.08   3217    1723   51397  10170     96.1    1.117  ! Near Maximum !
-01.0   95    45.54   3248    1757   53008  10262     96.5    1.101  ! Near Maximum !
+00.0   96    46.00   3279    1791   54668  10349     96.9    1.086  ! Near Maximum !
+01.0   97    46.46   3310    1825   56380  10434     97.3    1.071  ! Near Maximum !
+02.0   98    46.92   3341    1859   58147  10514     97.6    1.057  ! Near Maximum !
+03.0   99    47.38   3372    1894   59968  10591     97.9    1.043  !DANGEROUS LOAD-DO NOT USE!
+04.0  100    47.84   3403    1929   61848  10664     98.2    1.029  !DANGEROUS LOAD-DO NOT USE!
+05.0  101    48.30   3434    1964   63787  10734     98.5    1.015  !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     96    46.00   3433    1962   64175  10348     99.8    1.010  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    46.00   3081    1580   45321   9892     90.4    1.184

 

[Bucky5]

TackDriver284,

Thank you

Buck