270 - Reloader 19/IMR 4831 - 130gr.

[idahohunter8]

I have a bunch of powder in both of these but have never played with them in the 270...But I have heard how great both of these can be in the cartridge. The Nosler 7 and 8 manuals don't list either one for 130 grain loads...

Anyone out there got load data to work on and up to with these powders....I plan to push these as hot as safely possible until accuracy falls off.

 

[Bbear]

From Alliant:

http://alliantpowder.com/reloaders/powd ... rtridge=63

and from Hodgen:

http://www.hodgdonreloading.com/data/rifle

Just pick the 270, bullet weight and powder.

 

[SJB358]

Both have worked excellent in my time with plain old 270 Wins. 130's to 150's. Either powder will get good speeds with those bullets.

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler PART SP 16322
Useable Case Capaci: 61.884 grain H2O = 4.018 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-19

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.833% 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

-08.3 96 55.00 2925 2470 48558 11315 95.4 1.210
-07.5 97 55.50 2953 2516 49940 11421 95.7 1.195
-06.7 98 56.00 2980 2563 51361 11524 96.1 1.180
-05.8 99 56.50 3007 2610 52827 11624 96.5 1.165
-05.0 100 57.00 3034 2657 54338 11721 96.8 1.150
-04.2 101 57.50 3061 2705 55893 11816 97.1 1.135 ! Near Maximum !
-03.3 102 58.00 3089 2754 57494 11907 97.4 1.120 ! Near Maximum !
-02.5 103 58.50 3116 2802 59152 11995 97.7 1.106 ! Near Maximum !
-01.7 103 59.00 3143 2851 60855 12080 98.0 1.092 ! Near Maximum !
-00.8 104 59.50 3170 2901 62604 12162 98.2 1.078 ! Near Maximum !
+00.0 105 60.00 3197 2951 64401 12240 98.5 1.065 !DANGEROUS LOAD-DO NOT USE!
+00.8 106 60.50 3224 3001 66251 12314 98.7 1.052 !DANGEROUS LOAD-DO NOT USE!
+01.7 107 61.00 3251 3051 68157 12385 98.9 1.038 !DANGEROUS LOAD-DO NOT USE!
+02.5 108 61.50 3278 3102 70122 12453 99.1 1.025 !DANGEROUS LOAD-DO NOT USE!
+03.3 109 62.00 3305 3154 72148 12516 99.3 1.013 !DANGEROUS LOAD-DO NOT USE!
+04.2 110 62.50 3332 3205 74238 12576 99.4 1.000 !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 60.00 3342 3224 76909 11977 100.0 0.988 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 60.00 3000 2598 52443 11871 92.7 1.165


Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler PART SP 16322
Useable Case Capaci: 61.884 grain H2O = 4.018 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4831

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.877% 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

-08.8 95 52.00 2876 2387 47157 10611 99.1 1.251
-07.9 96 52.50 2902 2431 48527 10684 99.3 1.235
-07.0 97 53.00 2928 2475 49937 10754 99.4 1.218
-06.1 98 53.50 2955 2520 51386 10820 99.6 1.202
-05.3 99 54.00 2981 2565 52877 10883 99.7 1.186
-04.4 100 54.50 3007 2610 54411 10941 99.8 1.171
-03.5 101 55.00 3033 2655 55989 10995 99.9 1.156 ! Near Maximum !
-02.6 102 55.50 3058 2700 57613 11045 99.9 1.141 ! Near Maximum !
-01.8 103 56.00 3084 2745 59284 11091 100.0 1.126 ! Near Maximum !
-00.9 103 56.50 3110 2791 61003 11133 100.0 1.112 ! Near Maximum !
+00.0 104 57.00 3135 2837 62774 11172 100.0 1.097 ! Near Maximum !
+00.9 105 57.50 3160 2883 64596 11209 100.0 1.083 !DANGEROUS LOAD-DO NOT USE!
+01.8 106 58.00 3186 2929 66473 11247 100.0 1.070 !DANGEROUS LOAD-DO NOT USE!
+02.6 107 58.50 3211 2976 68405 11283 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
+03.5 108 59.00 3236 3022 70396 11319 100.0 1.043 !DANGEROUS LOAD-DO NOT USE!
+04.4 109 59.50 3261 3069 72447 11354 100.0 1.030 !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 57.00 3249 3048 75078 10742 100.0 1.018 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 57.00 2963 2534 50651 11375 97.6 1.204

 

[hubcap]

I have used IMR-4831 for a good while now. I loaded 130 grain sierra bullets and nosler PT,s starting in 1982 as I recall. Yes it can be an outstanding powder in a .270. To this day it remains my go to powder. I have been a long time user of nosler manual no.1 for powder charges. Never had an issue with any .270 loads listed in that manual. Any 130 grain nosler bullet powered by 57 gr. max load from manual no.1 went well over 3000 fps. in my rifles. No help with RL-19 as I have never used any.

 

[BF375]

I started using IMR4831 in the 270 Winchester shortly after its introduction in(IIRC) the early 70's. The rifle was a Ruger M77 as I recall. This was about the time that supplies of WW II H4831 were drying up,or had already and we assumed this new powder was similar,which it wasn't.

The DuPont data from back then called for 59 gr as max, as I recall,and we worked up to those charges,and (being new to the loading game and not too bright),even went to 60 grains. I even hunted this load in Montana,and it wasn't until we got our hands on a chronograph that we discovered the load was doing over 3200 fps from the Ruger's 22 inch barrel.

As years passed I noticed that most sources said 57 gr was max and after quite a few 270's using IMR4831 another powders, I'd be inclined to just stick to the Nosler max. There is little to be gained by chasing another 100 fps at the expense of higher pressures on the ragged edge.

Nothing mysterious about R19 as it is pretty much just a quicker version of RL22 and will max out about the same. I always stuck with RL22 as it has been a favorite in a couple of 270's I've owned, including one at present.