130 Accubond 270 WSM load

[DrMike]

The 140 ABs would work very well on elk.

 

[FOTIS]

Yup that is what I am thinking Doc. That couples with the lightweight Tikka T-3 Lite would be great!

 

[DrMike]

I would not feel undergunned with a load built with 140 ABs in my 270WSM.

 

[SJB358]

This elk didn't like 140 AB's much either Fotis.

I will be running the 160 AB's in the 7WSM. Just about the same in my book. Probably not a lick of difference between the two in the field.

 

[FOTIS]

Nice elk!

Man oh man. 6 days to go

 

[DrMike]

6 days to go

Seems like an eternity. Amazing how time can crawl when we are waiting for a hunt to begin.

 

[Backcast88]

I finally got a chance to load some rounds and shoot them but my velocities seemed really low.

I loaded the 130 AccuBond with 63 grains of Reloader 22 and every round is at max COL of 2.86".

For example. Nosler's load manual has 63 grains of Reloader 22 at 3330 fps. My chrono reading was 2890 fps. Unfortunately I didn't have as much time as I wanted and really only got to shoot my 63 grain loads and since I have a rifle hunt next week they will have to do for now since I have enough loaded and ready to hunt. One the up side they shot real well. I was consistently putting 2 nearly in the same hole but my X Bolt is very temp sensitive and the 3rd round tends to be a little of a flyer but still 3 shots easily under an inch at 100 yards (usually around 3/4").

After my hunt I will see about playing with my powder load a little more and see what kind of results I get but for now I have total confidence in the accuracy and performance of the 63 grain loads but am curious as to why in the word I am off by 400 fps or so. Any ideas?

 

[SJB358]

BC, yeah, I would imagine you will be upwards of 66-68 grains of RL22 with a 130..

Cartridge : .270 WSM
Bullet : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 72.433 grain H2O = 4.703 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0 91 61.20 2930 2478 43114 12346 95.6 1.326
-09.0 92 61.88 2964 2536 44612 12492 96.1 1.305
-08.0 93 62.56 2998 2595 46162 12632 96.5 1.285
-07.0 94 63.24 3032 2654 47758 12768 97.0 1.265
-06.0 95 63.92 3066 2714 49402 12898 97.4 1.245
-05.0 96 64.60 3100 2774 51099 13023 97.7 1.225
-04.0 97 65.28 3134 2835 52854 13142 98.1 1.206
-03.0 98 65.96 3168 2897 54670 13255 98.4 1.187 ! Near Maximum !
-02.0 99 66.64 3201 2959 56550 13363 98.7 1.169 ! Near Maximum !
-01.0 100 67.32 3235 3021 58495 13464 99.0 1.151 ! Near Maximum !
+00.0 101 68.00 3269 3084 60508 13559 99.2 1.133 ! Near Maximum !
+01.0 102 68.68 3302 3148 62593 13648 99.4 1.116 ! Near Maximum !
+02.0 103 69.36 3336 3212 64751 13729 99.6 1.099 !DANGEROUS LOAD-DO NOT USE!
+03.0 104 70.04 3369 3277 66987 13804 99.7 1.082 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 70.72 3402 3342 69304 13873 99.8 1.066 !DANGEROUS LOAD-DO NOT USE!
+05.0 106 71.40 3436 3407 71704 13933 99.9 1.050 !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 101 68.00 3423 3382 73163 13149 100.0 1.045 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 68.00 3054 2692 48293 13232 93.7 1.250

Good luck, still a super load at 3K, but you have alot of room to grow. I think I run 65.5 with a 150 PT

 

[Backcast88]

BC, yeah, I would imagine you will be upwards of 66-68 grains of RL22 with a 130..

Cartridge : .270 WSM
Bullet : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 72.433 grain H2O = 4.703 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0 91 61.20 2930 2478 43114 12346 95.6 1.326
-09.0 92 61.88 2964 2536 44612 12492 96.1 1.305
-08.0 93 62.56 2998 2595 46162 12632 96.5 1.285
-07.0 94 63.24 3032 2654 47758 12768 97.0 1.265
-06.0 95 63.92 3066 2714 49402 12898 97.4 1.245
-05.0 96 64.60 3100 2774 51099 13023 97.7 1.225
-04.0 97 65.28 3134 2835 52854 13142 98.1 1.206
-03.0 98 65.96 3168 2897 54670 13255 98.4 1.187 ! Near Maximum !
-02.0 99 66.64 3201 2959 56550 13363 98.7 1.169 ! Near Maximum !
-01.0 100 67.32 3235 3021 58495 13464 99.0 1.151 ! Near Maximum !
+00.0 101 68.00 3269 3084 60508 13559 99.2 1.133 ! Near Maximum !
+01.0 102 68.68 3302 3148 62593 13648 99.4 1.116 ! Near Maximum !
+02.0 103 69.36 3336 3212 64751 13729 99.6 1.099 !DANGEROUS LOAD-DO NOT USE!
+03.0 104 70.04 3369 3277 66987 13804 99.7 1.082 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 70.72 3402 3342 69304 13873 99.8 1.066 !DANGEROUS LOAD-DO NOT USE!
+05.0 106 71.40 3436 3407 71704 13933 99.9 1.050 !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 101 68.00 3423 3382 73163 13149 100.0 1.045 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 68.00 3054 2692 48293 13232 93.7 1.250

Good luck, still a super load at 3K, but you have alot of room to grow. I think I run 65.5 with a 150 PT

I decided to start out at 63 because Nosler load manual said it was the most accurate and 3330. I have a 23" barrel so I figured the rounds would be around 3250 but was shocked to be under 2900. The Nosler load manual says 65 grains is max load. Would I be ok at 66-68 grains pressure wise?

 

[FOTIS]

Nobody but your rifle knows that, but you should be fine.

 

[SJB358]

Nobody but your rifle knows that, but you should be fine.

BC, Fotis is right but I doubt you'll have any issues with the AB getting what Nosler states, you'll just be higher on the charge weight. Go a grain at a time till your getting speeds your happy with.

 

[Backcast88]

I will obviously use these loads for my hunt at the end of this week. This Sunday I might be able to get back out there and try a few more loads. If I have time I will load a few at 65 grains, 66 grains and maybe 67 grains and see what that gives me.