Which one ?
- Thread starter chad
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MudRunner2005
Well-Known Member
That's what I'd do. Keep the .280 AI, and then go buy you a cheap 700 ADL, and build a big 7mm on it. You can never have too many guns.
chad
Well-Known Member
I'll keep it if I can get it to shoot like the rl26 load. I would like the ql the feller was talking about earlier. Just want to make sure it's safe.
D
Deleted member 46119
Guest
I made an error. I had a longer barrel but that only affects velocity not pressure.
Give me your COAL and I'll fix the QL model.
chad
Well-Known Member
I think my velocities are great! I'll shoot this load if it's safe. That would put an end to my suffering and disappointment on the cartridge.
D
Deleted member 46119
Guest
Yes. Those velocities are great.
As fast as your barrel is is as slow as my 7mm barrel barrel is.
COAL??
As fast as your barrel is is as slow as my 7mm barrel barrel is.
COAL??
chad
Well-Known Member
Don't remember my over all length but with the hornady bullet bullet comparator gauge on my calipers it measures 2.816"
chad
Well-Known Member
Jfseaman, so is the load still safe? How about that ql data?
chad
Well-Known Member
can someone run a ql for me?
280AI
24" barrel
210 fed m primer
rl 26 powder with 63.5 grains
coal is 3.495"
280AI
24" barrel
210 fed m primer
rl 26 powder with 63.5 grains
coal is 3.495"
D
Deleted member 46119
Guest
QL is not perfect and there would still be a lot of adjustments if it were my own but....
Cartridge : .280 Ack Imp
Bullet : .284, 150, Nosler Accubond LR 58734 G7
Useable Case Capaci: 67.917 grain H2O = 4.410 cm³
Cartridge O.A.L. L6: 3.495 inch = 88.77 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 1.575% 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
-15.8 79 53.50 2451 2000 28920 10930 93.8 1.591
-14.2 81 54.50 2501 2084 30477 11189 94.9 1.560
-12.6 82 55.50 2552 2169 32129 11435 95.8 1.529
-11.0 84 56.50 2603 2256 33876 11667 96.7 1.498
-09.5 85 57.50 2654 2345 35727 11884 97.4 1.469
-07.9 87 58.50 2704 2436 37690 12085 98.1 1.436
-06.3 88 59.50 2755 2528 39772 12269 98.7 1.400
-04.7 90 60.50 2806 2622 41981 12435 99.1 1.364
-03.2 91 61.50 2856 2717 44328 12583 99.5 1.330
-01.6 93 62.50 2906 2813 46821 12711 99.8 1.296
+00.0 94 63.50 2956 2911 49470 12818 99.9 1.264
+01.6 96 64.50 3006 3009 52291 12905 100.0 1.232
+03.2 97 65.50 3055 3108 55294 12977 100.0 1.201 ! Near Maximum !
+04.7 99 66.50 3103 3208 58494 13047 100.0 1.171 ! Near Maximum !
+06.3 100 67.50 3152 3309 61898 13114 100.0 1.142 ! Near Maximum !
+07.9 102 68.50 3200 3411 65498 13178 100.0 1.114 !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 94 63.50 3110 3222 62572 12249 100.0 1.150 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 63.50 2727 2478 38522 12699 94.9 1.412
If you have no shiny spots, primers are still "rounded" etc...
I would believe you are good.
No one can say for sure as it's up to you but all indications are ok.
chad
Well-Known Member
what adjustments would you make?
D
Deleted member 46119
Guest
To your load. None.
To my data. Actual case capacity, "overbore" factor.
Worry less, shoot more.
chad
Well-Known Member
Seaman my case capacity is 72 grains of h20. How much difference is that making?
