22" barrel 270 Win and 140 AB's 3000+fps?

[rmarshall]

can I hit 3000 or better with a 22" pipe with the 140 AB and the following powders, R19, R17, Hunter and MagPro? Looking at a good ol 270 win, but want to hit at least the 3000 mark with these powders. What does QL say? anybody have a good load or two with a 22" pipe and 140's? accuracy is a must too.

 

[Ridgerunner665]

Highly unlikely...especially with a factory barrel/chamber.

Many won't even do it with 130's...

 

[Guy Miner]

Nosler's manual shows a max of just over 3,000 fps with the 140 gr bullet, but they're using a 24" barrel.

On the other hand, I never met a deer that could tell the difference between 2900 fps and 3000 fps...

 

[brians356]

I have some 270 loads w/ 140-gr BT ahead of RL-19 for a 22-inch Ruger M77R. They were worked up to first signs of pressure - stiffish bolt lift and slight extractor mark.

I will try to clock this load this weekend and report back w/ powder charge details.

 

[DrMike]

I never met a deer that could tell the difference between 2900 fps and 3000 fps...

True words. We would each do well to keep them in mind.

 

[SJB358]

can I hit 3000 or better with a 22" pipe with the 140 AB and the following powders, R19, R17, Hunter and MagPro? Looking at a good ol 270 win, but want to hit at least the 3000 mark with these powders. What does QL say? anybody have a good load or two with a 22" pipe and 140's? accuracy is a must too.

I would say you have a great chance..

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 140, Nosler AccuBond 54765
Useable Case Capaci: 59.393 grain H2O = 3.856 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 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 75 43.20 2428 1832 31977 10507 96.4 1.435
-18.0 77 44.28 2487 1923 34117 10788 97.4 1.398
-16.0 79 45.36 2546 2016 36396 11049 98.1 1.360
-14.0 81 46.44 2605 2110 38833 11289 98.8 1.320
-12.0 83 47.52 2664 2206 41429 11507 99.3 1.280
-10.0 85 48.60 2722 2303 44203 11701 99.7 1.241
-08.0 87 49.68 2779 2401 47152 11870 99.9 1.204
-06.0 88 50.76 2836 2501 50333 12012 100.0 1.169
-04.0 90 51.84 2893 2602 53716 12136 100.0 1.134
-02.0 92 52.92 2949 2703 57345 12256 100.0 1.101 ! Near Maximum !
+00.0 94 54.00 3004 2805 61229 12373 100.0 1.069 ! Near Maximum !
+02.0 96 55.08 3059 2908 65392 12486 100.0 1.039 !DANGEROUS LOAD-DO NOT USE!
+04.0 98 56.16 3113 3012 69841 12595 100.0 1.009 !DANGEROUS LOAD-DO NOT USE!
+06.0 100 57.24 3167 3117 74580 12700 100.0 0.981 !DANGEROUS LOAD-DO NOT USE!
+08.0 102 58.32 3220 3224 79648 12802 100.0 0.953 !DANGEROUS LOAD-DO NOT USE!
+10.0 103 59.40 3274 3331 85073 12899 100.0 0.927 !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 54.00 3111 3009 74270 11939 100.0 0.991 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 54.00 2840 2507 49264 12778 98.8 1.173

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 140, Nosler AccuBond 54765
Useable Case Capaci: 59.393 grain H2O = 3.856 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-19

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 45.60 2382 1764 32478 10104 88.0 1.431
-18.0 85 46.74 2443 1855 34684 10449 89.3 1.392
-16.0 87 47.88 2504 1948 37041 10786 90.6 1.354
-14.0 90 49.02 2565 2045 39561 11113 91.8 1.312
-12.0 92 50.16 2626 2144 42256 11429 93.0 1.272
-10.0 94 51.30 2688 2245 45141 11733 94.1 1.232
-08.0 96 52.44 2749 2350 48230 12024 95.1 1.194
-06.0 98 53.58 2811 2456 51540 12299 96.0 1.158
-04.0 100 54.72 2873 2565 55084 12558 96.8 1.123
-02.0 102 55.86 2934 2677 58907 12800 97.5 1.089 ! Near Maximum !
+00.0 104 57.00 2996 2790 62978 13022 98.2 1.056 ! Near Maximum !
+02.0 106 58.14 3058 2906 67332 13224 98.7 1.025 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 59.28 3119 3025 72010 13405 99.2 0.995 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 60.42 3181 3145 77040 13563 99.5 0.965 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 61.56 3242 3267 82457 13697 99.8 0.937 !DANGEROUS LOAD-DO NOT USE!
+10.0 115 62.70 3303 3391 88299 13806 99.9 0.909 !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 3136 3057 75175 12805 100.0 0.980 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 57.00 2808 2452 51305 12567 92.1 1.156


Cartridge : .270 Win. (SAAMI)
Bullet : .277, 140, Nosler AccuBond 54765
Useable Case Capaci: 59.393 grain H2O = 3.856 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Accurate MAGPRO

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 85 49.60 2313 1663 29148 10264 79.7 1.494
-18.0 87 50.84 2380 1760 31278 10685 81.4 1.453
-16.0 89 52.08 2447 1861 33578 11101 83.2 1.412
-14.0 92 53.32 2515 1966 36065 11511 84.8 1.372
-12.0 94 54.56 2584 2076 38756 11911 86.4 1.328
-10.0 96 55.80 2654 2189 41674 12301 88.0 1.282
-08.0 98 57.04 2724 2307 44839 12678 89.5 1.238
-06.0 100 58.28 2795 2429 48279 13040 90.9 1.196
-04.0 102 59.52 2867 2555 52022 13384 92.2 1.154
-02.0 104 60.76 2939 2685 56103 13710 93.4 1.115 ! Near Maximum !
+00.0 107 62.00 3012 2820 60559 14013 94.6 1.076 ! Near Maximum !
+02.0 109 63.24 3085 2958 65436 14293 95.6 1.039 !DANGEROUS LOAD-DO NOT USE!
+04.0 111 64.48 3158 3101 70778 14547 96.6 1.003 !DANGEROUS LOAD-DO NOT USE!
+06.0 113 65.72 3232 3248 76604 14772 97.4 0.968 !DANGEROUS LOAD-DO NOT USE!
+08.0 115 66.96 3307 3399 82993 14967 98.1 0.934 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 68.20 3381 3554 90021 15128 98.8 0.901 !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 107 62.00 3200 3184 75048 14186 99.2 0.983 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 62.00 2772 2388 47876 13036 85.5 1.195


Cartridge : .270 Win. (SAAMI)
Bullet : .277, 140, Nosler AccuBond 54765
Useable Case Capaci: 59.393 grain H2O = 3.856 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Ramshot Hunter

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 79 44.80 2388 1772 32194 10158 91.7 1.442
-18.0 81 45.92 2447 1862 34373 10476 92.9 1.403
-16.0 83 47.04 2507 1953 36698 10784 94.0 1.366
-14.0 85 48.16 2566 2047 39182 11079 95.1 1.324
-12.0 87 49.28 2626 2143 41836 11360 96.0 1.284
-10.0 89 50.40 2685 2241 44675 11625 96.9 1.245
-08.0 91 51.52 2745 2342 47706 11874 97.6 1.207
-06.0 93 52.64 2804 2444 50917 12105 98.3 1.171
-04.0 95 53.76 2863 2548 54332 12317 98.8 1.137
-02.0 97 54.88 2921 2653 57976 12509 99.3 1.103 ! Near Maximum !
+00.0 99 56.00 2980 2760 61868 12680 99.6 1.071 ! Near Maximum !
+02.0 101 57.12 3038 2869 66028 12828 99.8 1.040 !DANGEROUS LOAD-DO NOT USE!
+04.0 103 58.24 3096 2979 70477 12953 100.0 1.010 !DANGEROUS LOAD-DO NOT USE!
+06.0 105 59.36 3153 3090 75240 13055 100.0 0.981 !DANGEROUS LOAD-DO NOT USE!
+08.0 107 60.48 3210 3203 80346 13146 100.0 0.953 !DANGEROUS LOAD-DO NOT USE!
+10.0 109 61.60 3266 3317 85826 13233 100.0 0.926 !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 99 56.00 3104 2996 73983 12252 100.0 0.993 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 56.00 2803 2442 50054 12528 95.1 1.174


I would think you'd get an easy 2950 out of all of the powders you mentioned. Good luck. Please let us know how they shoot. Great information.

 

[Bruce Mc]

Retumbo can get 3100 fps from a 22" barrel. I bet the muzzle blast is awesome.

Is just my imagination, but has there been a real upturn in interest in the .270 win recently?

 

[1Shot]

If you are getting stiff bolt lift and ejector marks you are already WAAAAAAAY over pressure. BACK OFF!

 

[SJB358]

Retumbo can get 3100 fps from a 22" barrel. I bet the muzzle blast is awesome.

Is just my imagination, but has there been a real upturn in interest in the .270 win recently?

I was wondering the same thing.. Seems like alot of 270 shooters around.

 

[DrMike]

I think interest in the 270 has never really waned. New bullets and new powders, however, are allowing maximizing potential as a hunting tool. From my perspective, it means that the 280 will provide as good (or better) results with a little research. I rather enjoy working with those cartridges that are less popular. However, I suspect that the current interest in the 270 is driven by the prospect of even better accuracy and potential as a hunting tool through availability of new and improved components.

 

[brians356]

If you are getting stiff bolt lift and ejector marks you are already WAAAAAAAY over pressure. BACK OFF!

I said they were worked "up to" pressure signs, but that doesn't mean I left it there!

In fact, looking at fired cases, no extractor marks, but primers are well flattened (not to the extreme edge, and no pin cratering.) Brass is WW.

I was mistaken, they are RE-22 loads - 58.4 grains. That is a full 2.0 grains beyond Sierra's max RE-22 load for a 140-grain bullet.

FYI Hodgdon's annual load book uses a 24-inch barrel for 270 Win, and not one of their 140-grain max loads quite reaches 3000 fps (limited to Hodgdon, IMR and Win powders of course.) I haven't considered Hodgdon data to be particularly conservative, in fact some of their max loads seem a lot hotter than others'.

DrMike's QuickLoad data are encouraging, but it's obvious caution is in order trying to squeeze 3000 fps out of 22 inches.

I will clock my RE-22 58.4-grain loads out of my 22-inch Ruger 77R this weekend. FWIW these rounds were loaded about 20 years ago.

 

[EOD Diver]

RM,
I understand your desire to get above 3K, as I was in the same boat, but I wouldn't sweat it much if you don't achieve your target velocity. I loaded the max charge recommended by Nosler for the 140AB and 7828SSC (it proved to be the most accurate) and, wouldn't you know it, several years and many elk later it was only trucking along at a little over 2800FPS when I finally put it over my friend's chrony. I kind of laugh about it now, but that mild load kills like lightning.

BT

Gents,
If it shoots flat, recoils softly, kills game well, and gives decent barrel life it will never go out of style. Long live JOC's baby!

Joe

 

[brians356]

I think interest in the 270 has never really waned.

In around 1981 I drew my first mule deer tag in Nevada, where I had moved for college some years before. Suddenly I needed a rifle! Looking in the local newspaper there was an older Ruger 77R in 270 Win for sale and I jumped on it. If it would have been in any other non-magnum chambering I would have snagged it, it just happened to be in 270. But having grown up in Jack O'Connor's adopted hometown of Lewiston, ID, and as a kid having listened to adult elk hunters arguing about cartridges, with a staunch 270 following always represented (and its detractors as well) I was intrigued and not a little pleased to own a 270 as my first big game rifle. Since then I have naturally become a 270 fan, and have watched all the newer "better" cartridges, most in other calibers, come along, pushing the 270 little by little into relative obscurity. But it has always been a cartridge that overachieved, and deserved O'Connor's praise. It's "somewhat overbore" according to Ackley's reckoning, which means it can make good use of a barrel longer than 22 inches.

 

[Laker_Taker]

I bet you could hit 3K. I have a 24 inch barrel and I can hit 3k with 150 grain partitions out of my .270 win.

LT

 

[brians356]

It is a 100% verifiably proven fact - and a "consensus" amongst experts, making it "settled science" - that no animal ever knew whether the bullet it received was going 3000 fps, or 2900 fps, when it left the muzzle.

 

[sask boy]

I have been shooting the 270win since I was 15 years old so I guess this fall it will be 45 years. I have shot every big game animal in Saskatchewan with either the 130gr. Partition or the 130gr AccuBond. There is one species I have not hunted here and that is the woodland caribou . The only way you can get a tag is if you live in that zone which is way up near Northwest Territories.
Since shooting the CDL I really believe the 270win performs better with that extra length.

Blessings,
Dan

 

[DrMike]

I have been shooting the 270win since I was 15 years old so I guess this fall it will be 45 years.

Blessings,
Dan

Are you bragging? Or complaining, Dan? :mrgreen: And you finally saw the light and got a .284 bore! And a .358 bore!

 

[sask boy]

I guess Doc that shows that I am a slow learner :mrgreen:.
You would be surprised how many guys around here have never heard of a 280 let alone a 280AI.
The young guys around here are really into the RUMs and the AR type stuff.
Daryl who own the gun shop here stated that almost 50% of his business is assault type looking weapons.

Blessings,
Dan

 

[brians356]

Judging by the product reviews and how-to articles in A.R. and S.T. magazines, 95% of firearms must be either ARs or 1911s. Yawn.

 

[pre6422hornet]

I achieved 3150 with IMR 4064 and the 140BT's out of a 24" barrel M70. Unfortunately the pressure ( according to quickload) was too much so I backed off and am now at 3000fps.

I had zero pressure signs at the bolt. Primer was flattened just a touch when I was running 3150. And wouldn't you know it the accuracy on that load was around 1/2 MOA... damn the luck.