node help
- Thread starter muzz
- Start date
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
Muzz,
What you see there above is what you have...
Things I see.... RL26 is a little too slow burning for the Ackley if one is trying to use barrel time for accuracy... Node 4 is way over pressure and node 5 is way under pressure.... Neither will work.
As Scotty mentioned.... RL22, MRP, IMR 7828ssc, and maybe RL23 (no experience with it myself)... This is the burn range that works with the capacity of the 280 Ackley for the required barrel times.
That said.... There are accurate loads that aren't on nodes... These loads are fine.... A little more finicky about temperature and stuff, but perfectly usable as long as you're familiar with them.
If you want a "node load"... You're gonna need a different powder.... Or you can use the data above and find a load that works for you.
3,050 fps is PLENTY of velocity for what you're wanting.... Plenty!
This is using a true BC.... With the 150 ABLR at 2500 feet elevation (higher elevation makes it even better), 30 degrees F, 20 mph crosswind .... Even at a lowly 3,050 fps the 150 ABLR is an 800 yard deer killer, and will do elk at 600.
This pic is gonna be big.... On my phone... Can't edit it....
What you see there above is what you have...
Things I see.... RL26 is a little too slow burning for the Ackley if one is trying to use barrel time for accuracy... Node 4 is way over pressure and node 5 is way under pressure.... Neither will work.
As Scotty mentioned.... RL22, MRP, IMR 7828ssc, and maybe RL23 (no experience with it myself)... This is the burn range that works with the capacity of the 280 Ackley for the required barrel times.
That said.... There are accurate loads that aren't on nodes... These loads are fine.... A little more finicky about temperature and stuff, but perfectly usable as long as you're familiar with them.
If you want a "node load"... You're gonna need a different powder.... Or you can use the data above and find a load that works for you.
3,050 fps is PLENTY of velocity for what you're wanting.... Plenty!
This is using a true BC.... With the 150 ABLR at 2500 feet elevation (higher elevation makes it even better), 30 degrees F, 20 mph crosswind .... Even at a lowly 3,050 fps the 150 ABLR is an 800 yard deer killer, and will do elk at 600.
This pic is gonna be big.... On my phone... Can't edit it....
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
That can't be right....
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
That.... I mean....Dwh7271":109oz1ne said:
The one you did at 3.38" shows that to be the pressure of 63.5 grains at that length....
I'm asking for the pressure of 63.5 grains at 3.506" at the calculated burn rate (.393 Ba)....
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
Muzz,
I'd start at 60 grains at 3.34" OAL and see what it gets me on target if I were you....
I'd start at 60 grains at 3.34" OAL and see what it gets me on target if I were you....
- Thread starter
- #127
- Thread starter
- #128
RL17 might be good, but you aren't going to get quite the speeds out of it you would 7828 or 22. I would bet you would get 3050 or better though. I like RL17, very versatile powder for me. Top speeds in the 338 Win and 35 Newton with heavier bullets. It is like the 4350's, just faster FPS for about the same PSI's. It wouldn't hurt to try it if you can.
- Thread starter
- #130
I have no idea what your H20 capacity is, but the PSI and FPS will show you were top end would be approximately.
Cartridge : .280 Ack Imp
Bullet : .284, 150, Nosler AccuBond LR 58734 G7
Useable Case Capaci: 65.294 grain H2O = 4.239 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-17
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 74 46.80 2516 2108 33101 9910 98.4 1.505
-18.0 76 47.97 2575 2208 35317 10132 99.0 1.467
-16.0 78 49.14 2633 2309 37680 10333 99.4 1.427
-14.0 80 50.31 2691 2411 40198 10512 99.8 1.385
-12.0 82 51.48 2748 2515 42885 10668 100.0 1.344
-10.0 83 52.65 2804 2619 45750 10800 100.0 1.304
-08.0 85 53.82 2860 2725 48808 10923 100.0 1.266
-06.0 87 54.99 2915 2831 52079 11042 100.0 1.230
-04.0 89 56.16 2970 2937 55568 11159 100.0 1.195 ! Near Maximum !
-02.0 91 57.33 3023 3045 59296 11273 100.0 1.161 ! Near Maximum !
+00.0 93 58.50 3077 3153 63242 11384 100.0 1.129 ! Near Maximum !
+02.0 95 59.67 3130 3262 67440 11491 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
+04.0 96 60.84 3182 3373 71913 11596 100.0 1.067 !DANGEROUS LOAD-DO NOT USE!
+06.0 98 62.01 3234 3484 76680 11697 100.0 1.039 !DANGEROUS LOAD-DO NOT USE!
+08.0 100 63.18 3286 3597 81768 11794 100.0 1.011 !DANGEROUS LOAD-DO NOT USE!
+10.0 102 64.35 3338 3711 87201 11887 100.0 0.984 !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 93 58.50 3173 3354 76198 11014 100.0 1.050 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 58.50 2929 2857 50803 11885 99.7 1.235
7828SSC looks good too..
Cartridge : .280 Ack Imp
Bullet : .284, 150, Nosler AccuBond LR 58734 G7
Useable Case Capaci: 65.294 grain H2O = 4.239 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 83 51.20 2438 1979 31323 9889 86.8 1.531
-18.0 85 52.48 2504 2088 33539 10246 88.4 1.490
-16.0 87 53.76 2570 2200 35919 10592 89.9 1.450
-14.0 89 55.04 2637 2316 38481 10925 91.3 1.405
-12.0 91 56.32 2704 2436 41239 11245 92.6 1.359
-10.0 93 57.60 2772 2559 44209 11548 93.8 1.315
-08.0 95 58.88 2840 2686 47412 11834 95.0 1.272
-06.0 97 60.16 2908 2816 50869 12100 96.0 1.231
-04.0 99 61.44 2976 2950 54609 12344 96.9 1.191
-02.0 101 62.72 3044 3087 58658 12565 97.7 1.152 ! Near Maximum !
+00.0 104 64.00 3113 3227 63049 12761 98.4 1.115 ! Near Maximum !
+02.0 106 65.28 3181 3370 67819 12931 99.0 1.079 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 66.56 3249 3516 73007 13072 99.4 1.044 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 67.84 3317 3664 78664 13184 99.7 1.011 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 69.12 3385 3816 84850 13264 99.9 0.978 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 70.40 3452 3969 91624 13311 100.0 0.947 !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 104 64.00 3270 3561 76953 12402 100.0 1.027 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 64.00 2897 2794 51007 12325 91.7 1.227
If it were me, I'd give 7828 a shot. Very similar to RL22, RL23 and MRP....
Cartridge : .280 Ack Imp
Bullet : .284, 150, Nosler AccuBond LR 58734 G7
Useable Case Capaci: 65.294 grain H2O = 4.239 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-17
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 74 46.80 2516 2108 33101 9910 98.4 1.505
-18.0 76 47.97 2575 2208 35317 10132 99.0 1.467
-16.0 78 49.14 2633 2309 37680 10333 99.4 1.427
-14.0 80 50.31 2691 2411 40198 10512 99.8 1.385
-12.0 82 51.48 2748 2515 42885 10668 100.0 1.344
-10.0 83 52.65 2804 2619 45750 10800 100.0 1.304
-08.0 85 53.82 2860 2725 48808 10923 100.0 1.266
-06.0 87 54.99 2915 2831 52079 11042 100.0 1.230
-04.0 89 56.16 2970 2937 55568 11159 100.0 1.195 ! Near Maximum !
-02.0 91 57.33 3023 3045 59296 11273 100.0 1.161 ! Near Maximum !
+00.0 93 58.50 3077 3153 63242 11384 100.0 1.129 ! Near Maximum !
+02.0 95 59.67 3130 3262 67440 11491 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
+04.0 96 60.84 3182 3373 71913 11596 100.0 1.067 !DANGEROUS LOAD-DO NOT USE!
+06.0 98 62.01 3234 3484 76680 11697 100.0 1.039 !DANGEROUS LOAD-DO NOT USE!
+08.0 100 63.18 3286 3597 81768 11794 100.0 1.011 !DANGEROUS LOAD-DO NOT USE!
+10.0 102 64.35 3338 3711 87201 11887 100.0 0.984 !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 93 58.50 3173 3354 76198 11014 100.0 1.050 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 58.50 2929 2857 50803 11885 99.7 1.235
7828SSC looks good too..
Cartridge : .280 Ack Imp
Bullet : .284, 150, Nosler AccuBond LR 58734 G7
Useable Case Capaci: 65.294 grain H2O = 4.239 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 83 51.20 2438 1979 31323 9889 86.8 1.531
-18.0 85 52.48 2504 2088 33539 10246 88.4 1.490
-16.0 87 53.76 2570 2200 35919 10592 89.9 1.450
-14.0 89 55.04 2637 2316 38481 10925 91.3 1.405
-12.0 91 56.32 2704 2436 41239 11245 92.6 1.359
-10.0 93 57.60 2772 2559 44209 11548 93.8 1.315
-08.0 95 58.88 2840 2686 47412 11834 95.0 1.272
-06.0 97 60.16 2908 2816 50869 12100 96.0 1.231
-04.0 99 61.44 2976 2950 54609 12344 96.9 1.191
-02.0 101 62.72 3044 3087 58658 12565 97.7 1.152 ! Near Maximum !
+00.0 104 64.00 3113 3227 63049 12761 98.4 1.115 ! Near Maximum !
+02.0 106 65.28 3181 3370 67819 12931 99.0 1.079 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 66.56 3249 3516 73007 13072 99.4 1.044 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 67.84 3317 3664 78664 13184 99.7 1.011 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 69.12 3385 3816 84850 13264 99.9 0.978 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 70.40 3452 3969 91624 13311 100.0 0.947 !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 104 64.00 3270 3561 76953 12402 100.0 1.027 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 64.00 2897 2794 51007 12325 91.7 1.227
If it were me, I'd give 7828 a shot. Very similar to RL22, RL23 and MRP....
- Thread starter
- #132
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
Use the default case capacity.... The numbers say it is close enough (74 grains)
My rifle is 74 grains.... My thread says 73.9 because I forgot to edit it.... But as my sample size grew it ended up at 74 grains.
My rifle is 74 grains.... My thread says 73.9 because I forgot to edit it.... But as my sample size grew it ended up at 74 grains.
- Thread starter
- #134
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
The reason I say 74 is because if it was 72... That load he been shooting would have blown primers everywhere.
- Thread starter
- #136
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
65,000 psi....
Lots of people use 7828.....JD338 to name one, but he uses it with 168's I believe.
It was my 2nd choice... And I'll still likely work with it some in the future.
Lots of people use 7828.....JD338 to name one, but he uses it with 168's I believe.
It was my 2nd choice... And I'll still likely work with it some in the future.
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
Dwh7271":11fhy49r said:
No problem... Thanks for your help.
I knew it was gonna be around 70k psi.... Just wanted it put out there for muzz to see.
