QL 22-250 AI request

[frankm]

Would someone take a shot at a QL for me?

Following parameters:
22-250 AI. (48 grs case capacity)
80 gr VLD
2.565 OAL
26" barrel
IMR4831
R26

Appreciate any help.

 

[DrMike]

Cartridge          : .22-250 Ackley Imp.
Bullet             : .224, 80, Berger VLD G7 #22422
Useable Case Capaci: 43.658 grain H2O = 2.835 cm³
Cartridge O.A.L. L6: 2.565 inch = 65.15 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-26

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    39.24   2956    1552   38977  12092     97.3    1.346
-09.0   92    39.68   2994    1592   40426  12221     97.7    1.323
-08.0   93    40.11   3031    1632   41934  12341     98.2    1.300
-07.0   94    40.55   3069    1673   43505  12454     98.6    1.278
-06.0   95    40.98   3106    1714   45143  12557     98.9    1.256
-05.0   96    41.42   3144    1756   46851  12652     99.2    1.234
-04.0   97    41.86   3181    1797   48634  12738     99.5    1.213
-03.0   98    42.29   3218    1840   50494  12814     99.7    1.192  ! Near Maximum !
-02.0   99    42.73   3255    1882   52435  12881     99.8    1.172  ! Near Maximum !
-01.0  100    43.16   3292    1925   54463  12938     99.9    1.152  ! Near Maximum !
+00.0  101    43.60   3329    1969   56582  12985    100.0    1.132  ! Near Maximum !
+01.0  102    44.04   3366    2012   58797  13022    100.0    1.113  !DANGEROUS LOAD-DO NOT USE!
+02.0  103    44.47   3402    2056   61113  13055    100.0    1.094  !DANGEROUS LOAD-DO NOT USE!
+03.0  104    44.91   3438    2100   63535  13087    100.0    1.075  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    45.34   3474    2144   66071  13117    100.0    1.057  !DANGEROUS LOAD-DO NOT USE!
+05.0  106    45.78   3510    2189   68725  13146    100.0    1.039  !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    101    43.60   3499    2174   71884  12385    100.0    1.030  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    101    43.60   3074    1678   43947  12973     95.4    1.265

Cartridge          : .22-250 Ackley Imp.
Bullet             : .224, 80, Berger VLD G7 #22422
Useable Case Capaci: 43.658 grain H2O = 2.835 cm³
Cartridge O.A.L. L6: 2.565 inch = 65.15 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 4831

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   90    34.56   2880    1474   41508  10374     98.2    1.330
-09.0   91    34.94   2911    1505   42837  10471     98.5    1.310
-08.0   92    35.33   2941    1536   44208  10564     98.7    1.291
-07.0   93    35.71   2971    1568   45620  10652     99.0    1.272
-06.0   94    36.10   3001    1600   47076  10736     99.2    1.254
-05.0   95    36.48   3031    1632   48576  10816     99.4    1.236
-04.0   96    36.86   3061    1665   50122  10890     99.6    1.218  ! Near Maximum !
-03.0   97    37.25   3091    1697   51717  10960     99.7    1.200  ! Near Maximum !
-02.0   98    37.63   3121    1730   53360  11025     99.8    1.183  ! Near Maximum !
-01.0   99    38.02   3150    1763   55055  11085     99.9    1.166  ! Near Maximum !
+00.0  100    38.40   3180    1796   56802  11140    100.0    1.149  ! Near Maximum !
+01.0  101    38.78   3209    1829   58605  11190    100.0    1.133  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    39.17   3238    1862   60464  11235    100.0    1.117  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    39.55   3267    1896   62382  11278    100.0    1.102  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    39.94   3295    1929   64360  11320    100.0    1.086  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    40.32   3324    1963   66402  11362    100.0    1.071  !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    100    38.40   3303    1938   67828  10718    100.0    1.065  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    38.40   2997    1596   45944  11205     96.7    1.263

 

[frankm]

Thx Dr Mike. My loads to date pretty close to these numbers. R26 getting another 75 fps or so and shooting to similar POI. Case expansion similar between the two also.

 

[thatguySHM]

I shoot the 75gr ELD-M in mine, and using RL23 I'm shooting a very consistent 3370 fps and single digit SDs. Its a great little round. I tried some 80s but liked the higher velocities of the 75s.

Sent from my SM-G960U using Tapatalk

 

[frankm]

Most the guys that I shoot with also favor 75 s. I have 500 or so VLD s left thus my desire to burn those.

In head to head comparison with pretty much identical velocities the 80 shot 1 to 1.5 MOA flatter at 1140 yds. Stated BC actually favors 75 slightly. Guess that's why you verify actual drops and don't rely only on calc s. Granted 75 can be pushed faster but none the less interesting test!