AR-Comp and 62gr fmj

[golfish]

Hey fellas, I haven't been able to find any data for this load.

I'm using starling 5.56 brass. #41 primers, AR-Comp powder and Hornady 62gr FMJ projectiles. My fuzzy math says 24.0-24.2 to start.

Does that sound right to you?

Thank you

[BajaJames83]

They list
55gr with 25.6
68gr with 23.4

So at your ~24gr sounds like a good starting load could work up to 25 easily.

[golfish]

Thanks James

[L4D]

Hornady list 62gr FMJ + AR Comp
COL: 2.229"
Start: 17.6gr / 2700 FPS
Max: 24.6gr / 3100 FPS

[golfish]

Hornady list 62gr FMJ + AR Comp
COL: 2.229"
Start: 17.6gr / 2700 FPS
Max: 24.6gr / 3100 FPS

Thanks brother....

I got my granddaughter to help me download the Hornady manual off of Amazon tonight.

Wish I did this years ago

[ar15barrels]

Hey fellas, I haven't been able to find any data for this load.

I'm using starling 5.56 brass. #41 primers, AR-Comp powder and Hornady 62gr FMJ projectiles. My fuzzy math says 24.0-24.2 to start.

Does that sound right to you?

Thank you

How long does your 62gr Hornady FMJ bullet measure?
Is it a boattail like a typical 55gr FMJ-BT?
I don't have a quickload listing for that bullet but I have an IMI produced FMJ-BT which shows 0.872" long.

[golfish]

How long does your 62gr Hornady FMJ bullet measure?
Is it a boattail like a typical 55gr FMJ-BT?
I don't have a quickload listing for that bullet but I have an IMI produced FMJ-BT which shows 0.872" long.

Yes, FMJ-BT...I measured a couple. 0.819 is what I have.

[ar15barrels]

Yes, FMJ-BT...I measured a couple. 0.819 is what I have.

Here is what quickload thinks:

Cartridge          : 5.56 mm NATO - 5.56 x 45 mm
Bullet             : .224, 62, Hornady FMJ-BT w/c 22760
Useable Case Capaci: 25.388 grain H2O = 1.648 cm?
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 16.0 inch = 406.4 mm
Powder             : Alliant AR-Comp *C *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.417% 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

-04.2  102    23.00   2819    1094   50028  10691     99.8    0.834
-03.7  102    23.10   2831    1104   50759  10713     99.9    0.829
-03.3  102    23.20   2843    1113   51495  10734     99.9    0.824
-02.9  103    23.30   2856    1123   52249  10754     99.9    0.818
-02.5  103    23.40   2868    1132   53017  10773    100.0    0.813  ! Near Maximum !
-02.1  104    23.50   2880    1142   53793  10790    100.0    0.808  ! Near Maximum !
-01.7  104    23.60   2892    1152   54584  10806    100.0    0.802  ! Near Maximum !
-01.2  105    23.70   2904    1161   55386  10822    100.0    0.797  ! Near Maximum !
-00.8  105    23.80   2916    1171   56203  10836    100.0    0.792  ! Near Maximum !
-00.4  106    23.90   2929    1181   57031  10850    100.0    0.787  ! Near Maximum !
+00.0  106    24.00   2941    1191   57857  10864    100.0    0.782  ! Near Maximum !
+00.4  106    24.10   2953    1200   58730  10878    100.0    0.777  ! Near Maximum !
+00.8  107    24.20   2965    1210   59601  10892    100.0    0.772  ! Near Maximum !
+01.2  107    24.30   2977    1220   60488  10906    100.0    0.767  ! Near Maximum !
+01.7  108    24.40   2989    1230   61387  10919    100.0    0.762  ! Near Maximum !
+02.1  108    24.50   3001    1240   62302  10933    100.0    0.757  !DANGEROUS LOAD-DO NOT USE!

Results caused by ? 3% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 3% relative to nominal value:
+Ba    106    24.00   2983    1225   61734  10703    100.0    0.762  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 3% relative to nominal value:
-Ba    106    24.00   2893    1152   54210  11024     99.9    0.803  ! Near Maximum !

[golfish]

Thank you