QL 280AI 168ABLR 7828SSC

[nvbroncrider]

Could someone run a QL for this.

Thanks,

Jake

 

[DrMike]

Cartridge          : .280 Ack Imp
Bullet             : .284, 168, Nosler Accubond LR 58623 G7
Useable Case Capaci: 63.519 grain H2O = 4.124 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 7828 SSC

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   82    49.12   2340    2043   32080   9878     89.6    1.594
-18.0   84    50.35   2402    2152   34334  10210     91.0    1.552
-16.0   86    51.58   2464    2265   36743  10531     92.3    1.510
-14.0   88    52.80   2526    2381   39333  10837     93.5    1.462
-12.0   90    54.03   2589    2500   42114  11128     94.7    1.414
-10.0   92    55.26   2652    2623   45105  11402     95.7    1.368
-08.0   94    56.49   2715    2749   48326  11657     96.6    1.325
-06.0   96    57.72   2777    2877   51797  11892     97.5    1.283
-04.0   98    58.94   2840    3009   55541  12105     98.2    1.242  ! Near Maximum !
-02.0  100    60.17   2903    3143   59586  12295     98.8    1.203  ! Near Maximum !
+00.0  102    61.40   2965    3280   63965  12460     99.2    1.165  ! Near Maximum !
+02.0  104    62.63   3028    3420   68706  12599     99.6    1.128  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    63.86   3090    3561   73853  12710     99.9    1.093  !DANGEROUS LOAD-DO NOT USE!
+06.0  108    65.08   3152    3705   79452  12792    100.0    1.059  !DANGEROUS LOAD-DO NOT USE!
+08.0  110    66.31   3213    3851   85528  12847    100.0    1.026  !DANGEROUS LOAD-DO NOT USE!
+10.0  112    67.54   3274    3999   92212  12893    100.0    0.994  !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    102    61.40   3102    3589   78013  11984    100.0    1.076  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    61.40   2771    2865   51676  12233     93.7    1.280

 

[nvbroncrider]

Thanks Mike

 

[nvbroncrider]

Finally got some loaded we will see what happens soon.

 

[DrMike]

Should be interesting, Jake.

 

[sask boy]

Jake I am looking forward to your range report as I have two boxes of the 168gr. ABLRs for my 280AI. I also have a couple of pounds of 7828ssc :wink:.

Blessings,
Dan

 

[SJB358]

Your long barrel should let them run fast too Jake.

When is the range day?

 

[nvbroncrider]

Hopefully Thusday morning after I get off work.

 

[jmad_81]

I played with 7828ssc in mine last week with the 168 ABLR. 59 gr shot really well and gave me 2900 fps with single digit ES from a 24" barrel. Shot better than RL-22 or RL 23. I'm using Nosler brass and WLRM primers.

 

[nvbroncrider]

Jake,

How far off the lands? I know mine is way out there. I will find out tomorrow. You got any pictures?

 

[jmad_81]

I'm not sure off the top of my head but from the looks of things, and the history with those bullets in this gun I need to move them back a bit.

 

[JD338]

Looks like I need to pick up a pound of IMR7828SSC!
RL22 just isn't getting er done.

JD338

 

[Ridgerunner665]

Looks like I need to pick up a pound of IMR7828SSC!
RL22 just isn't getting er done.

JD338

That's gonna be the one I try next if MRP let's me down...

 

[JD338]

Looks like I need to pick up a pound of IMR7828SSC!
RL22 just isn't getting er done.

JD338

That's gonna be the one I try next if MRP let's me down...

I just picked up a pound of IMR 7828SSC so I am ready to go! :mrgreen:

JD338

 

[Ridgerunner665]

Looks like I need to pick up a pound of IMR7828SSC!
RL22 just isn't getting er done.

JD338

That's gonna be the one I try next if MRP let's me down...

I just picked up a pound of IMR 7828SSC so I am ready to go! :mrgreen:

JD338

On the ball...

Let us know how it works.

 

[nvbroncrider]

Well shot today don't know what to think yet.

Lands @ 3.550"

 

[JD338]

Jake,

What kind of speed are you getting?
I loaded up some tonight at 58.5, 59.0 and 59.5 grs with a .250" jump.
Hope to shoot tomorrow.

JD338

 

[SJB358]

This is pretty interesting. I'll be very interested to see how you two make out. Jim, that is quite alot of free travel. It'll be cool if it really shoots right there...

The ABLR's ran me through the ringer, I'd really like to see them come alive.. At least the real long ones like the 210's, 168's and 175's..

 

[Dwh7271]

That's my 6.5-06 last week with the 129s at .030 jump at 200 yards. Seemed like the further I jumped them the better it got. Don't know if that helps and that seemed like a big jump to me, but it seemed to work. (Had to fix my lack of a zero on the depth)

 

[DrMike]

I agree that 0.3 inches of jump is a lot. The most jump I ever employed to get a rifle to shoot was with a 130 grain Scirocco in a 270 WSM. I had 0.25 inches of jump in that instance, but it was a very accurate load. There has to be a point of diminishing returns.