POP I need help please

corbin9191 · Jun 22, 2008

I was wondering if you could give me some load data for the new 270 wsm using 130 grain and 140 grain bullets using IMR 4350. Because my friend across the street just got a 270 wsm and the gun smith that he went to told him that he was going to come up with a load that the pressure would be around 75000 psi, and the gun is brand new and he doesnt want to ruin it. Thank you

Guest · Jun 22, 2008

That's not a gunsmith. That's a nutbar. I'd take my rifle away from that jerk double quick. Even factory Weatherby Magnum ammo from Weatherby is only loaded into the 65k-72k range these days. 75k is asking for trouble, especially if there's a change in temp, or the barrel gets a bit of fouling, or the planets align slightly differently one day. Yikes!

jtoews80 · Jun 22, 2008

RUN!!!!!

Richracer1 · Jun 22, 2008

What kind of bullets???

I just worked up a load for my 270WSM using IMR 4350 and 130ETs.
Here's the recipe:
Win brass trimmed to 2.09
Fed GM215M Primers
130gn E-Tip
COL 2.880
60.6gns IMR4350

corbin9191 · Jun 22, 2008

Richracer1":3kz4umm4 said:
What kind of bullets???

I just worked up a load for my 270WSM using IMR 4350 and 130ETs.
Here's the recipe:
Win brass trimmed to 2.09
Fed GM215M Primers
130gn E-Tip
COL 2.880
60.6gns IMR4350

The bullets he will be using are Sierra game king

steve4102 · Jun 23, 2008

Sierra #5
IMR 4350
130gr SBT. SPT
135gr HPBT Matchking
Start-58.7gr 3000fps
Max- 62.7gr 3200fps

140gr HPBT
140gr SBT
IMR 4350
Start-56.6gr 2900fps
Max- 61gr 3100fps

Of couse QL is only a guess. Without case volume of water and COL, it is even a bigger guess.

Cartridge : .270 WSM
Bullet : .277, 130, Sierra SPBT 1820
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 77 50.40 2659 2041 34348 10535 94.6 1.468
-18.0 79 51.66 2721 2137 36561 10826 95.6 1.431
-16.0 81 52.92 2782 2235 38900 11104 96.5 1.389
-14.0 83 54.18 2844 2334 41375 11367 97.2 1.348
-12.0 84 55.44 2905 2435 43993 11614 97.9 1.310
-10.0 86 56.70 2965 2538 46764 11844 98.5 1.273
-08.0 88 57.96 3025 2642 49694 12057 99.0 1.237
-06.0 90 59.22 3085 2748 52795 12250 99.4 1.202
-04.0 92 60.48 3144 2854 56076 12425 99.7 1.169 ! Near Maximum !
-02.0 94 61.74 3203 2961 59549 12578 99.9 1.137 ! Near Maximum !
+00.0 96 63.00 3261 3070 63227 12710 100.0 1.106 ! Near Maximum !
+02.0 98 64.26 3318 3179 67122 12824 100.0 1.077 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 65.52 3375 3288 71249 12933 100.0 1.048 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 66.78 3431 3399 75626 13039 100.0 1.021 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 68.04 3487 3510 80270 13141 100.0 0.994 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 69.30 3542 3622 85200 13240 100.0 0.969 !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 96 63.00 3375 3288 74217 12277 100.0 1.032 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 63.00 3093 2762 52256 12818 97.3 1.205

Cartridge : .270 WSM
Bullet : .277, 140, Sierra SPBT 1845
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 77 48.80 2592 2089 35220 10366 95.8 1.496
-18.0 79 50.02 2652 2186 37479 10638 96.6 1.462
-16.0 81 51.24 2711 2284 39868 10896 97.4 1.417
-14.0 83 52.46 2769 2384 42395 11138 98.1 1.376
-12.0 85 53.68 2828 2486 45067 11365 98.7 1.336
-10.0 87 54.90 2886 2589 47893 11574 99.1 1.299
-08.0 88 56.12 2943 2693 50881 11765 99.5 1.262
-06.0 90 57.34 3000 2798 54042 11937 99.8 1.227
-04.0 92 58.56 3057 2905 57385 12089 99.9 1.194 ! Near Maximum !
-02.0 94 59.78 3113 3012 60923 12221 100.0 1.161 ! Near Maximum !
+00.0 96 61.00 3168 3120 64668 12338 100.0 1.130 !DANGEROUS LOAD-DO NOT USE!
+02.0 98 62.22 3222 3228 68633 12452 100.0 1.100 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 63.44 3276 3337 72835 12562 100.0 1.072 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 64.66 3330 3447 77289 12670 100.0 1.044 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 65.88 3383 3558 82014 12774 100.0 1.017 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 67.10 3436 3670 87030 12874 100.0 0.991 !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 96 61.00 3271 3327 75807 11927 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 61.00 3013 2822 53517 12573 98.1 1.229

FOTIS · Jun 23, 2008

PM me for immediate help in the future. However with accubonds....

Cartridge : .270 WSM
Bullet : .277, 130, Nosler AccuBond 54987
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 75 48.80 2512 1822 30667 9566 88.2 1.543
-18.0 77 50.02 2572 1910 32557 9878 89.4 1.505
-16.0 79 51.24 2632 1999 34555 10184 90.6 1.468
-14.0 81 52.46 2691 2091 36668 10482 91.7 1.432
-12.0 83 53.68 2751 2185 38902 10773 92.8 1.392
-10.0 85 54.90 2811 2280 41262 11054 93.8 1.353
-08.0 87 56.12 2870 2378 43756 11325 94.7 1.315
-06.0 89 57.34 2929 2477 46392 11585 95.5 1.279
-04.0 90 58.56 2989 2578 49179 11834 96.3 1.245
-02.0 92 59.78 3048 2681 52125 12069 97.0 1.211
+00.0 94 61.00 3106 2786 55240 12291 97.7 1.178 ! Near Maximum !
+02.0 96 62.22 3165 2892 58536 12498 98.2 1.147 ! Near Maximum !
+04.0 98 63.44 3223 2999 62024 12690 98.7 1.117 ! Near Maximum !
+06.0 100 64.66 3281 3108 65717 12866 99.1 1.088 !DANGEROUS LOAD-DO NOT USE!
+08.0 102 65.88 3339 3218 69630 13025 99.5 1.060 !DANGEROUS LOAD-DO NOT USE!
+10.0 104 67.10 3396 3330 73778 13166 99.7 1.032 !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 61.00 3245 3040 64566 12203 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 61.00 2924 2468 46063 11832 91.7 1.283

Cartridge : .270 WSM
Bullet : .277, 140, Nosler AccuBond 54765
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 76 48.80 2499 1942 32892 9877 90.8 1.540
-18.0 78 50.02 2558 2034 34940 10181 91.9 1.508
-16.0 80 51.24 2617 2128 37105 10477 93.0 1.470
-14.0 82 52.46 2675 2225 39393 10764 94.0 1.428
-12.0 84 53.68 2734 2323 41812 11041 94.9 1.388
-10.0 86 54.90 2792 2423 44368 11307 95.8 1.348
-08.0 88 56.12 2850 2525 47069 11561 96.6 1.311
-06.0 90 57.34 2908 2628 49925 11801 97.3 1.275
-04.0 92 58.56 2965 2733 52944 12028 97.9 1.240
-02.0 93 59.78 3023 2840 56137 12241 98.4 1.206 ! Near Maximum !
+00.0 95 61.00 3080 2948 59514 12438 98.9 1.174 ! Near Maximum !
+02.0 97 62.22 3136 3058 63089 12618 99.3 1.143 ! Near Maximum !
+04.0 99 63.44 3193 3169 66874 12781 99.6 1.113 !DANGEROUS LOAD-DO NOT USE!
+06.0 101 64.66 3249 3281 70885 12927 99.8 1.084 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 65.88 3304 3394 75136 13054 99.9 1.056 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 67.10 3359 3508 79647 13162 100.0 1.029 !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 95 61.00 3204 3191 69392 12164 100.0 1.095 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 61.00 2910 2633 49728 12157 94.0 1.276

corbin9191 · Jun 23, 2008

POP":2kqmkmmu said:
PM me for immediate help in the future. However with accubonds....

Cartridge : .270 WSM
Bullet : .277, 130, Nosler AccuBond 54987
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 75 48.80 2512 1822 30667 9566 88.2 1.543
-18.0 77 50.02 2572 1910 32557 9878 89.4 1.505
-16.0 79 51.24 2632 1999 34555 10184 90.6 1.468
-14.0 81 52.46 2691 2091 36668 10482 91.7 1.432
-12.0 83 53.68 2751 2185 38902 10773 92.8 1.392
-10.0 85 54.90 2811 2280 41262 11054 93.8 1.353
-08.0 87 56.12 2870 2378 43756 11325 94.7 1.315
-06.0 89 57.34 2929 2477 46392 11585 95.5 1.279
-04.0 90 58.56 2989 2578 49179 11834 96.3 1.245
-02.0 92 59.78 3048 2681 52125 12069 97.0 1.211
+00.0 94 61.00 3106 2786 55240 12291 97.7 1.178 ! Near Maximum !
+02.0 96 62.22 3165 2892 58536 12498 98.2 1.147 ! Near Maximum !
+04.0 98 63.44 3223 2999 62024 12690 98.7 1.117 ! Near Maximum !
+06.0 100 64.66 3281 3108 65717 12866 99.1 1.088 !DANGEROUS LOAD-DO NOT USE!
+08.0 102 65.88 3339 3218 69630 13025 99.5 1.060 !DANGEROUS LOAD-DO NOT USE!
+10.0 104 67.10 3396 3330 73778 13166 99.7 1.032 !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 61.00 3245 3040 64566 12203 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 61.00 2924 2468 46063 11832 91.7 1.283

Cartridge : .270 WSM
Bullet : .277, 140, Nosler AccuBond 54765
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 76 48.80 2499 1942 32892 9877 90.8 1.540
-18.0 78 50.02 2558 2034 34940 10181 91.9 1.508
-16.0 80 51.24 2617 2128 37105 10477 93.0 1.470
-14.0 82 52.46 2675 2225 39393 10764 94.0 1.428
-12.0 84 53.68 2734 2323 41812 11041 94.9 1.388
-10.0 86 54.90 2792 2423 44368 11307 95.8 1.348
-08.0 88 56.12 2850 2525 47069 11561 96.6 1.311
-06.0 90 57.34 2908 2628 49925 11801 97.3 1.275
-04.0 92 58.56 2965 2733 52944 12028 97.9 1.240
-02.0 93 59.78 3023 2840 56137 12241 98.4 1.206 ! Near Maximum !
+00.0 95 61.00 3080 2948 59514 12438 98.9 1.174 ! Near Maximum !
+02.0 97 62.22 3136 3058 63089 12618 99.3 1.143 ! Near Maximum !
+04.0 99 63.44 3193 3169 66874 12781 99.6 1.113 !DANGEROUS LOAD-DO NOT USE!
+06.0 101 64.66 3249 3281 70885 12927 99.8 1.084 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 65.88 3304 3394 75136 13054 99.9 1.056 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 67.10 3359 3508 79647 13162 100.0 1.029 !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 95 61.00 3204 3191 69392 12164 100.0 1.095 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 61.00 2910 2633 49728 12157 94.0 1.276

Ok I will do that next time thank you for the data, and Richracer1, steve4102 thank you for the reloading information also.