AR-Comp 60 Grain VMax

[hunter24605]

Does anyone have data for AR-Comp using Hrndy 60 gr VMax? I looked at Alliant's data and they don't show any data for 60 grain bullets with AR-Comp. Maybe because its better suited to heavier bullets?

 

[DrMike]

If you mean data for a .223, here's a projection.

Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 60, Hornady V-MAX FB 22281
Useable Case Capaci: 25.124 grain H2O = 1.631 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant AR-Comp

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   84    18.88   2539     859   27641   6266     95.8    1.277
-18.0   86    19.35   2601     901   29532   6423     96.8    1.242
-16.0   88    19.82   2662     944   31559   6567     97.7    1.209
-14.0   91    20.30   2724     988   33731   6696     98.4    1.176
-12.0   93    20.77   2785    1033   36064   6810     99.0    1.144
-10.0   95    21.24   2845    1078   38569   6908     99.5    1.111
-08.0   97    21.71   2905    1124   41262   6990     99.8    1.078
-06.0   99    22.18   2964    1171   44160   7054    100.0    1.047
-04.0  101    22.66   3023    1217   47279   7102    100.0    1.016  ! Near Maximum !
-02.0  103    23.13   3080    1264   50642   7142    100.0    0.986  ! Near Maximum !
+00.0  105    23.60   3137    1311   54271   7181    100.0    0.958  ! Near Maximum !
+02.0  107    24.07   3193    1359   58195   7217    100.0    0.931  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    24.54   3249    1406   62440   7251    100.0    0.904  !DANGEROUS LOAD-DO NOT USE!
+06.0  112    25.02   3304    1454   67040   7282    100.0    0.879  !DANGEROUS LOAD-DO NOT USE!
+08.0  114    25.49   3359    1503   72035   7311    100.0    0.854  !DANGEROUS LOAD-DO NOT USE!
+10.0  116    25.96   3413    1552   77466   7336    100.0    0.831  !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    23.60   3251    1408   66871   6849    100.0    0.889  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    23.60   2958    1166   43605   7489     98.4    1.051

 

[hunter24605]

If you mean data for a .223, here's a projection.

Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 60, Hornady V-MAX FB 22281
Useable Case Capaci: 25.124 grain H2O = 1.631 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant AR-Comp

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   84    18.88   2539     859   27641   6266     95.8    1.277
-18.0   86    19.35   2601     901   29532   6423     96.8    1.242
-16.0   88    19.82   2662     944   31559   6567     97.7    1.209
-14.0   91    20.30   2724     988   33731   6696     98.4    1.176
-12.0   93    20.77   2785    1033   36064   6810     99.0    1.144
-10.0   95    21.24   2845    1078   38569   6908     99.5    1.111
-08.0   97    21.71   2905    1124   41262   6990     99.8    1.078
-06.0   99    22.18   2964    1171   44160   7054    100.0    1.047
-04.0  101    22.66   3023    1217   47279   7102    100.0    1.016  ! Near Maximum !
-02.0  103    23.13   3080    1264   50642   7142    100.0    0.986  ! Near Maximum !
+00.0  105    23.60   3137    1311   54271   7181    100.0    0.958  ! Near Maximum !
+02.0  107    24.07   3193    1359   58195   7217    100.0    0.931  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    24.54   3249    1406   62440   7251    100.0    0.904  !DANGEROUS LOAD-DO NOT USE!
+06.0  112    25.02   3304    1454   67040   7282    100.0    0.879  !DANGEROUS LOAD-DO NOT USE!
+08.0  114    25.49   3359    1503   72035   7311    100.0    0.854  !DANGEROUS LOAD-DO NOT USE!
+10.0  116    25.96   3413    1552   77466   7336    100.0    0.831  !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    23.60   3251    1408   66871   6849    100.0    0.889  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    23.60   2958    1166   43605   7489     98.4    1.051

Thanks A bunch!!!

Yep, 223. Guess that was kind of an important piece of information I left out there, huh? lol

 

[thatguySHM]

Check back and leave a range report! I loaded some RDF with AR Comp for my bolt gun. Can't get to the range for a few more months due to snow. Thanks

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